Re: Tersa Replacement Blades
That¡¯s a good question! I finally just put a piece of blue tape near the cutterhead and record the date installed and the flipped with a white china marker. I used to forget all the time. Now I know when and which edge!
Good luck!
On Fri, Mar 5, 2021 at 8:23 AM imranindiana via <imranindiana= [email protected]> wrote: Thanks Fred. Have you figured a way to identify/mark sides?
Imran On Mar 5, 2021, at 8:15 AM, Fred Rossi < fred@...> wrote: ? This is the same place I get mine. M+ work great, are inexpensive and last a long time as long as your stock is clean. I buy a few sets at a time.?
Fred Rossi?
On Fri, Mar 5, 2021 at 7:56 AM imranindiana via <imranindiana= [email protected]> wrote: I need to order my first replacement Tersa knives for Dual51.
l see HSS and M+ with little diff in price. Any recommendations between the two? Per the website HSS is fine for common hardwoods that I intend to use and M+ is recommended for harder woods like hickory and exotics. I do not have plans for using these harder woods but if M+ is more durable and equally sharp as HSS then why not get M+.
How about a reliable place to order from. I see that many outfits are making them.
This place in Canada claims to sell Tersa brand made in Switzerland
Hermance offers Tigra brand for similar price as above.
American National Knife offers a HSS blade that is $10 more per blade.
BTW, is anyone offering them with side 1/2 identification markings?
I am leaning towards Canadian outfit and HSS but would like to learn from collective.
Imran
-- _____________________
Fred Rossi 617.905.6497
-- _____________________
Fred Rossi 617.905.6497
|
Used KF700 year 200 price check
Hello - I've been reading a few posts and topics to research the ins and outs of used Felder machinery (I own all kinds of brands, almost always used, incl. a Hammer A31, Minimax, Rojek and Powermatic). I've found a locally available used KF700, year 2000. I would call it's condition "fair" - it's been sitting for 2 years unused, and is on it's 3rd owner. Covered in dust inside and out. It would be a step up to a format slider from my 1990's era Rojek KPF300, with its solid guide rail and small cast iron outrigger table and simple shaper.
Pro's - tilting and reverse shaper functions would be new to me (Rojek is vertical and forward only), format slider, both motors and power functions operate, slider rolls well, everything is nominally flat, the shaper spindle and saw arbor both run true with no wobble (like maybe 1/1000). No rust, just fair amount of scratches and dust.
Con's - missing a few accessory items, older F mount and non X-roll table era, only one spindle, no shaper parts except the basic fence, and the whopper, 3 phase 5.5 KW (7.5hp) - this last one involves $1300 to purchase a RPC since I have single phase. 40-50 amp breaker will use half my shop power. Only 80" slider, I have been searching for 98"+ for about a year (to replace the 60" Rojek, to have more sheet good processing capacity). I find several local 10' sliders? - without the shaper function - on Craigslist each month, but the 8' size seems to be a unicorn.
The $3500 seems like an almost fair price for a "needs TLC" machine, although the RPC means it's closer to $5k before selling the Rojek. That's still under half price compared to new.
Thoughts on this price, for this era of machine - just about right, or too high?
thanks.
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Re: Tersa Replacement Blades
I also use the M42 steel on my jointer. I dont think ive personally used the chrome type before, and the HSS set that came on my used machine was pretty well worn. M42 isnt that much of a premium in comparison. I really tried to make sense of buying a set of carbide, but its hard to justify the cost. I think the carbide knives can be re-sharpened, which would help a lot, but we are talking like 7-10 years before you break even in comparison to M42. I might not even own this machine in 7-10 years. Carbide insert heads are a very easy argument to make against straight knife machines simply from a cost of operating perspective. However, only having two fresh tersa edges versus 4 fresh insert edges is a significant difference.?
Patrick
On Fri, Mar 5, 2021 at 8:15 AM Fred Rossi < fred@...> wrote: This is the same place I get mine. M+ work great, are inexpensive and last a long time as long as your stock is clean. I buy a few sets at a time.?
Fred Rossi?
On Fri, Mar 5, 2021 at 7:56 AM imranindiana via <imranindiana= [email protected]> wrote: I need to order my first replacement Tersa knives for Dual51.
l see HSS and M+ with little diff in price. Any recommendations between the two? Per the website HSS is fine for common hardwoods that I intend to use and M+ is recommended for harder woods like hickory and exotics. I do not have plans for using these harder woods but if M+ is more durable and equally sharp as HSS then why not get M+.
How about a reliable place to order from. I see that many outfits are making them.
This place in Canada claims to sell Tersa brand made in Switzerland
Hermance offers Tigra brand for similar price as above.
American National Knife offers a HSS blade that is $10 more per blade.
BTW, is anyone offering them with side 1/2 identification markings?
I am leaning towards Canadian outfit and HSS but would like to learn from collective.
Imran
_____________________
Fred Rossi 617.905.6497
|
Re: Tersa Replacement Blades
Thanks Fred. Have you figured a way to identify/mark sides?
Imran
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Show quoted text
On Mar 5, 2021, at 8:15 AM, Fred Rossi <fred@...> wrote: ? This is the same place I get mine. M+ work great, are inexpensive and last a long time as long as your stock is clean. I buy a few sets at a time.?
Fred Rossi?
On Fri, Mar 5, 2021 at 7:56 AM imranindiana via <imranindiana= [email protected]> wrote: I need to order my first replacement Tersa knives for Dual51.
l see HSS and M+ with little diff in price. Any recommendations between the two? Per the website HSS is fine for common hardwoods that I intend to use and M+ is recommended for harder woods like hickory and exotics. I do not have plans for using these harder woods but if M+ is more durable and equally sharp as HSS then why not get M+.
How about a reliable place to order from. I see that many outfits are making them.
This place in Canada claims to sell Tersa brand made in Switzerland
Hermance offers Tigra brand for similar price as above.
American National Knife offers a HSS blade that is $10 more per blade.
BTW, is anyone offering them with side 1/2 identification markings?
I am leaning towards Canadian outfit and HSS but would like to learn from collective.
Imran
-- _____________________
Fred Rossi 617.905.6497
|
Re: Tersa Replacement Blades
This is the same place I get mine. M+ work great, are inexpensive and last a long time as long as your stock is clean. I buy a few sets at a time.?
Fred Rossi?
On Fri, Mar 5, 2021 at 7:56 AM imranindiana via <imranindiana= [email protected]> wrote: I need to order my first replacement Tersa knives for Dual51.
l see HSS and M+ with little diff in price. Any recommendations between the two? Per the website HSS is fine for common hardwoods that I intend to use and M+ is recommended for harder woods like hickory and exotics. I do not have plans for using these harder woods but if M+ is more durable and equally sharp as HSS then why not get M+.
How about a reliable place to order from. I see that many outfits are making them.
This place in Canada claims to sell Tersa brand made in Switzerland
Hermance offers Tigra brand for similar price as above.
American National Knife offers a HSS blade that is $10 more per blade.
BTW, is anyone offering them with side 1/2 identification markings?
I am leaning towards Canadian outfit and HSS but would like to learn from collective.
Imran
-- _____________________
Fred Rossi 617.905.6497
|
I need to order my first replacement Tersa knives for Dual51.
l see HSS and M+ with little diff in price. Any recommendations between the two? Per the website HSS is fine for common hardwoods that I intend to use and M+ is recommended for harder woods like hickory and exotics. I do not have plans for using these harder woods but if M+ is more durable and equally sharp as HSS then why not get M+.
How about a reliable place to order from. I see that many outfits are making them.
This place in Canada claims to sell Tersa brand made in Switzerland
Hermance offers Tigra brand for similar price as above.
American National Knife offers a HSS blade that is $10 more per blade.
BTW, is anyone offering them with side 1/2 identification markings?
I am leaning towards Canadian outfit and HSS but would like to learn from collective.
Imran
|
Thanks Paul. I have been taking care of that. I think the sticker with an arrow to no where is misleading. I got the machine new and do not recall a label on saw end. Anyhow, just wanted to ensure I did not miss a mystery oiling spot ?
Imran
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On Mar 5, 2021, at 2:44 AM, Paul Curme <paul.curme@...> wrote: ?
Imran,
Its intended to indicate that you need to lubricate the tilting mechanism for the spindle moulder (shaper) both the rise and fall screw and the canting yoke and the worm screw underneath. you should have a similar lable at the other end for the Saw.
Personally, i have always used the bearing grease on all of the cast parts as a base lubricant as it attracts less dust over time, I only oil the rise and fall screws, as I have fitted bellows over both to stop the dust getting in.
Paul
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Call it AI if you want, but if the neural net engine in the iPhone fails to find a face in Portrait mode, it still does a damn good job simulating bokeh. ?It¡¯s not what I would want for commercial work, but it is a marvel nonetheless and is handy for lots of things other than people photography if you know how to use it. ?I eagerly await the day when the spacial data is spit out with the image, and Photoshop can automatically generate a field-variable mask and sharpness filter from it.
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On Mar 4, 2021, at 9:56 PM, mark thomas < murkyd@...> wrote:
The Phone portrait mode is actually a combination of calculated depth that David described, and "AI" (ML algorithms) that Alain mentioned.? ?The spatial algorithms produce bokeh effects, and the "AI" prioritizes focus on faces.? They work together and cannot be isolated, despite the fact that the edit UI f-stop slider seems seems to suggest that you are only affecting spatial aspects.?
Also note that the intent of portrait mode is not to simulate optical bokeh.? The intent to make nice portraits.? Blurring things that not in the same plane as the subject is one tool to help make nice portraits, and optics do this (bokeh), but digital processing also provides entirely new methods, eg, recognizing human faces and blurring everything else, regardless of its distance from the lens.
With just optics, everything at the same distance from a lens has the same focus.? For example, a subject's chin and a necklace might be at exactly the same distance from the lens, and so will have the same focus.? But they will not have the same focus on an iPhone in portrait mode, because although the depth calculations would result in the same focus, the "AI" algorithms will override the distance calcs, and prioritize the face and blur the necklace.? ? These algorithms prioritization of focus on faces, or on non-human objects they assume to the the point of interest, are one of the culprits?in the sometimes too-sharp "cut out" boundaries that Alain referred to.
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Imran,
Its intended to indicate that you need to lubricate the tilting mechanism for the spindle moulder (shaper) both the rise and fall screw and the canting yoke and the worm screw underneath. you should have a similar lable at the other end for the Saw.
Personally, i have always used the bearing grease on all of the cast parts as a base lubricant as it attracts less dust over time, I only oil the rise and fall screws, as I have fitted bellows over both to stop the dust getting in.
Paul
|
The Phone portrait mode is actually a combination of calculated depth that David described, and "AI" (ML algorithms) that Alain mentioned.? ?The spatial algorithms produce bokeh effects, and the "AI" prioritizes focus on faces.? They work together and cannot be isolated, despite the fact that the edit UI f-stop slider seems seems to suggest that you are only affecting spatial aspects.?
Also note that the intent of portrait mode is not to simulate optical bokeh.? The intent to make nice portraits.? Blurring things that not in the same plane as the subject is one tool to help make nice portraits, and optics do this (bokeh), but digital processing also provides entirely new methods, eg, recognizing human faces and blurring everything else, regardless of its distance from the lens.
With just optics, everything at the same distance from a lens has the same focus.? For example, a subject's chin and a necklace might be at exactly the same distance from the lens, and so will have the same focus.? But they will not have the same focus on an iPhone in portrait mode, because although the depth calculations would result in the same focus, the "AI" algorithms will override the distance calcs, and prioritize the face and blur the necklace.? ? These algorithms prioritization of focus on faces, or on non-human objects they assume to the the point of interest, are one of the culprits?in the sometimes too-sharp "cut out" boundaries that Alain referred to.
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Hi Alain,
The listed aperture (if that¡¯s what you mean by DofF) is an imputed value based on the assumption everything is normalized to the equivalent lens FL on a full frame 35mm SLR. ? For instance, the ¡°Cat¡± photo you linked to was actually captured at f2.4 with a 1.54mm FL lens (13mm DLSR equivalent) in the iPhone XS, yet the imputed aperture was normalized to 35mm full-frame was roughly equivalent to f16.0. ?The actual lens in the iPhone bears no relationship to conventional DLSR or mirrorless equivalents with regard to FL, DofF, aperture, etc. ?Same as APS frame cameras - it all has to be normalized.?
For instance, an iPhone 11 standard model has the following rear camera lenses: one ?/2.4 ultra wide-angle lens with a 120¡ã field of view and 2¡Á optical zoom out. ?The lens physical focal length is 1.54mm which is roughly equivalent to a 13mm FL lens on full-frame 35mm DLSR. one ?/1.8 wide-angle lens with a FL of 4.25mm, equivalent to a 26mm lens on full-frame 35mm DLSR. ?
The Pro model has the same lenses listed above plus an additional rear ?/2.0 telephoto lens with 2x optical zoom in. ?The physical FL is 6mm which is equivalent to a 52mm FL lens on full frame DLSR, so it will optically zoom to a 104mm equivalent. ?When shooting in Portrait mode on the Pro model, this telephoto lens is used to augment the bokeh simulation, and thus produces superior results with fewer artifacts. ?This may account for our different experiences, although I had no complaints about the previous XS iPhone version in portrait mode when updated to the latest firmware and camera apps.
Real-world professional videographers working with moving subjects will dispute your clam that the Sony AF system is superior. ?I have done my own tests, and there is plenty of scientific and in-situ published analysis that backs this up. ?The Sony system is certainly excellent if eyes are present in the image, as is the new Nikon Z-series. ?In my own tests, I saw much more ¡°hunting¡± with the Sony a7R IV than the Canon M50 in vlogging applications where the camera is stationary. ?
It is true that when it comes to AF, as well as a lot of other things these days, confirmation bias and quasi-religious brand loyalty distort the actual performance facts. ?You can go on the web and find any story you want to believe in when it comes to AF. ?But the pro consensus is Canon - still - and I am not a big fan of Canon. ?As a 55 year devotee of Nikon, I¡¯d like to claim my gear rules the world, but when it comes to video AF, that is clearly not the case and I may be riding a dead horse with my own brand loyalty. ?This is kinda like Martin v Format 4 v Altendorf. ?And of course none of this actually matters wrt the OP question about camera gear for shop video production. ?LOL
As they say down at the corner 7/11, ¡°Unicuique sua."
David Best
https://www.instagram.com/davidpbest/
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Thanks David for the background blur details but I think your explanation about using both of the phone cameras at the same time does not apply to all models. On my iPhone 11, I have no way to control the DoF post capture (or I have missed it in the past year!) and sometimes I see strange?artifacts around my?subject or physically impossible DoF. My guess is that since you have a phone with a telephoto lens (compared to the iPhone 11 with only wide and ultra-wide), it behaves differently. I haven't?dug into the technicalities of these and these are only educated guesses (I studied AI image processing for a while) based on personal observation with my iPhone 11.??
Regarding focusing, small correction, Sony AF using the eye focus is insane. I have used/owned Canon, Nikon, PhaseOne, Hasselblad and Mamya and Sony wins hands down when using eye focus. With it, all (99%) of my shots of fast moving subjects have the eyes in perfect focus, even at f/1.8 on a 135mm. The limiting factor is the lens motor and not the camera processing. It works for video too but not in such an impressive way. Disclaimer, due to Covid I haven't?touched all the latest models from the past 18 months so other brands may have caught up...
Obviously all of this is a bit overboard for anyone who simply needs to shoot shop videos and product pictures. As mentioned previously by others, any of the recent high end iPhone/Android phone or iPad will do a great job given proper lighting.?
On Thu, Mar 4, 2021 at 7:01 PM imranindiana via <imranindiana= [email protected]> wrote: David,
Awesome read. Reminded me of my wife¡¯s travels to Cray in Elgin, MN when she worked for Conoco and did capacity planning for their Cray.
My 30 yr old Canon EOS 10s film camera could track moving objects and continuously adjust focus until shutter release. Still have it but has not been used in probably 15 yrs. I still would like a full frame body.
Imran ?Alain makes a point about the simulated background blur using Portrait mode on the iPhone.? The effect is called? bokeh, intended to simulate the depth of field focus limitations of conventional optics. It does limitations, but in my experience, the limitations are not those (¡°cut-out¡± effect) Alain mentions.? For commercial work, I always reach for my Nikon gear, but I still marvel at the Portrait mode in the iPhone. ?
Alain refers to it as ¡°AI¡±, and for the non-technical user this description can suffice.? In truth, it¡¯s not strictly an AI process, although it is very computationally intensive.? In portrait mode, the iPhone uses two lenses that are about 18mm apart to capture two images, then pixel-by-pixel, it compares the two images and creates a spacial map, calculating the distance away from the camera for each pixel (all 12 million). It does this by examining the parallax difference between the two images.? This is the kind of computational challenge that would bring a Cray super computer to its knees just 20 years ago.? Once the spacial map is generated (about 1 second on an iPhone), the user is given a slider to control the amount of blur that is applied to the ¡°background¡± - and the blur is linear relative to the computed distance from the camera lens - the further away, the more the blur.? The user has complete control over the application and intensity of the bokeh effect.
Here is an example of the same Cat image Alain referenced in his email - it illustrates varying degrees of bokeh application using the slider for depth of field on the iPhone: ?
Note that the image above was taken with an iPhone two generations old (the XS Max). ??
The user has complete control over the ¡°cut-out¡± effect within the limits of the computation algorithm.
Where the Portrait mode has bigger limitations is in subject identification.? This is particularly true of images with long narrow elements in the subject, or where there are transparent elements.? Consider this example - where the bokeh effect has been added at two levels of intensity: ???
Notice the stem of the glass and the swizzle stick with the olives - as the bokeh effect is increased, the algorithm breaks down in it¡¯s ability to distinguish between subject and background. ? This image was taken with the newer generation iPhone 11. ?
The only way to get precise bokeh effect today is with real optics - which translates to expensive fast and heavy lenses and body.? But for general shop photography, where some background blur effect is desirable, the iPhone can certainly fill that need.? Like I said, for commercial work, I will always reach for my Nikon gear.
One aspect that we didn¡¯t touch on is auto focus for video work.? Canon¡¯s phase detect system is still the leader in this area and can track moving subjects amazingly well.? The Sony and Nikon contrast based auto focus systems are not as good for video.? I have found the iPhone 11 auto focus at least equal to the Nikon and Sony systems if not a bit better for video work.? When I purchased the Canon M50 for vlogging work, I found it no better than my iPhone 11 at 4K 30 fps, which is why I sold it.
As a part time photographer, I think the use of portrait mode on the iPhone (and any other phone not using the periscope hack) is a hit or miss. The thing to keep in mind when using this mode is that the phone uses AI to blur the background, instead of using the laws of optics, which can create some unrealistic subject to background separation. It works relatively well for human subject but sometimes the subject?looks cut out like in this example from David:
while some others are very convincing:?
My current setup is filming with iPhone/iPad (90% of the time), editing on iPad with Luma Fusion and using a LED light on a tripod for directional lighting. It gets me about 80% of where I was using 10k$ worth of studio gears a few?years ago and it is so much more convenient!?
I forgot to mention one other iPhone support system I use in the shop. ? This one attaches to anything steel or cast iron with a switchable magnetic base. ? This is the Noga MA61003 Big Boy: ?
How I use it:
<IMG_0298.jpeg>
On Mar 3, 2021, at 6:31 PM, Fred Rossi < fred@...> wrote:
Folks:
Do any of you create video in your shop for social media content, sales purposes, your web site etc.? If so, what type of camera do you use (or do you simply use a smart phone)? GoPro, Sony, other? I appreciate any bits of advice.
Fred Rossi
|
Thanks David for the background blur details but I think your explanation about using both of the phone cameras at the same time does not apply to all models. On my iPhone 11, I have no way to control the DoF post capture (or I have missed it in the past year!) and sometimes I see strange?artifacts around my?subject or physically impossible DoF. My guess is that since you have a phone with a telephoto lens (compared to the iPhone 11 with only wide and ultra-wide), it behaves differently. I haven't?dug into the technicalities of these and these are only educated guesses (I studied AI image processing for a while) based on personal observation with my iPhone 11.??
Regarding focusing, small correction, Sony AF using the eye focus is insane. I have used/owned Canon, Nikon, PhaseOne, Hasselblad and Mamya and Sony wins hands down when using eye focus. With it, all (99%) of my shots of fast moving subjects have the eyes in perfect focus, even at f/1.8 on a 135mm. The limiting factor is the lens motor and not the camera processing. It works for video too but not in such an impressive way. Disclaimer, due to Covid I haven't?touched all the latest models from the past 18 months so other brands may have caught up...
Obviously all of this is a bit overboard for anyone who simply needs to shoot shop videos and product pictures. As mentioned previously by others, any of the recent high end iPhone/Android phone or iPad will do a great job given proper lighting.?
On Thu, Mar 4, 2021 at 7:01 PM imranindiana via <imranindiana= [email protected]> wrote: David,
Awesome read. Reminded me of my wife¡¯s travels to Cray in Elgin, MN when she worked for Conoco and did capacity planning for their Cray.
My 30 yr old Canon EOS 10s film camera could track moving objects and continuously adjust focus until shutter release. Still have it but has not been used in probably 15 yrs. I still would like a full frame body.
Imran ?Alain makes a point about the simulated background blur using Portrait mode on the iPhone.? The effect is called? bokeh, intended to simulate the depth of field focus limitations of conventional optics. It does limitations, but in my experience, the limitations are not those (¡°cut-out¡± effect) Alain mentions.? For commercial work, I always reach for my Nikon gear, but I still marvel at the Portrait mode in the iPhone. ?
Alain refers to it as ¡°AI¡±, and for the non-technical user this description can suffice.? In truth, it¡¯s not strictly an AI process, although it is very computationally intensive.? In portrait mode, the iPhone uses two lenses that are about 18mm apart to capture two images, then pixel-by-pixel, it compares the two images and creates a spacial map, calculating the distance away from the camera for each pixel (all 12 million). It does this by examining the parallax difference between the two images.? This is the kind of computational challenge that would bring a Cray super computer to its knees just 20 years ago.? Once the spacial map is generated (about 1 second on an iPhone), the user is given a slider to control the amount of blur that is applied to the ¡°background¡± - and the blur is linear relative to the computed distance from the camera lens - the further away, the more the blur.? The user has complete control over the application and intensity of the bokeh effect.
Here is an example of the same Cat image Alain referenced in his email - it illustrates varying degrees of bokeh application using the slider for depth of field on the iPhone: ?
Note that the image above was taken with an iPhone two generations old (the XS Max). ??
The user has complete control over the ¡°cut-out¡± effect within the limits of the computation algorithm.
Where the Portrait mode has bigger limitations is in subject identification.? This is particularly true of images with long narrow elements in the subject, or where there are transparent elements.? Consider this example - where the bokeh effect has been added at two levels of intensity: ???
Notice the stem of the glass and the swizzle stick with the olives - as the bokeh effect is increased, the algorithm breaks down in it¡¯s ability to distinguish between subject and background. ? This image was taken with the newer generation iPhone 11. ?
The only way to get precise bokeh effect today is with real optics - which translates to expensive fast and heavy lenses and body.? But for general shop photography, where some background blur effect is desirable, the iPhone can certainly fill that need.? Like I said, for commercial work, I will always reach for my Nikon gear.
One aspect that we didn¡¯t touch on is auto focus for video work.? Canon¡¯s phase detect system is still the leader in this area and can track moving subjects amazingly well.? The Sony and Nikon contrast based auto focus systems are not as good for video.? I have found the iPhone 11 auto focus at least equal to the Nikon and Sony systems if not a bit better for video work.? When I purchased the Canon M50 for vlogging work, I found it no better than my iPhone 11 at 4K 30 fps, which is why I sold it.
As a part time photographer, I think the use of portrait mode on the iPhone (and any other phone not using the periscope hack) is a hit or miss. The thing to keep in mind when using this mode is that the phone uses AI to blur the background, instead of using the laws of optics, which can create some unrealistic subject to background separation. It works relatively well for human subject but sometimes the subject?looks cut out like in this example from David:
while some others are very convincing:?
My current setup is filming with iPhone/iPad (90% of the time), editing on iPad with Luma Fusion and using a LED light on a tripod for directional lighting. It gets me about 80% of where I was using 10k$ worth of studio gears a few?years ago and it is so much more convenient!?
I forgot to mention one other iPhone support system I use in the shop. ? This one attaches to anything steel or cast iron with a switchable magnetic base. ? This is the Noga MA61003 Big Boy: ?
How I use it:
<IMG_0298.jpeg>
On Mar 3, 2021, at 6:31 PM, Fred Rossi < fred@...> wrote:
Folks:
Do any of you create video in your shop for social media content, sales purposes, your web site etc.? If so, what type of camera do you use (or do you simply use a smart phone)? GoPro, Sony, other? I appreciate any bits of advice.
Fred Rossi
|
David,
Awesome read. Reminded me of my wife¡¯s travels to Cray in Elgin, MN when she worked for Conoco and did capacity planning for their Cray.
My 30 yr old Canon EOS 10s film camera could track moving objects and continuously adjust focus until shutter release. Still have it but has not been used in probably 15 yrs. I still would like a full frame body.
Imran
toggle quoted message
Show quoted text
On Mar 4, 2021, at 6:08 PM, david@... via groups.io <david@...> wrote: ? Alain makes a point about the simulated background blur using Portrait mode on the iPhone. ?The effect is called? bokeh, intended to simulate the depth of field focus limitations of conventional optics. It does limitations, but in my experience, the limitations are not those (¡°cut-out¡± effect) Alain mentions. ?For commercial work, I always reach for my Nikon gear, but I still marvel at the Portrait mode in the iPhone. ?
Alain refers to it as ¡°AI¡±, and for the non-technical user this description can suffice. ?In truth, it¡¯s not strictly an AI process, although it is very computationally intensive. ?In portrait mode, the iPhone uses two lenses that are about 18mm apart to capture two images, then pixel-by-pixel, it compares the two images and creates a spacial map, calculating the distance away from the camera for each pixel (all 12 million). It does this by examining the parallax difference between the two images. ?This is the kind of computational challenge that would bring a Cray super computer to its knees just 20 years ago. ?Once the spacial map is generated (about 1 second on an iPhone), the user is given a slider to control the amount of blur that is applied to the ¡°background¡± - and the blur is linear relative to the computed distance from the camera lens - the further away, the more the blur. ?The user has complete control over the application and intensity of the bokeh effect.
Here is an example of the same Cat image Alain referenced in his email - it illustrates varying degrees of bokeh application using the slider for depth of field on the iPhone: ?
Note that the image above was taken with an iPhone two generations old (the XS Max). ??
The user has complete control over the ¡°cut-out¡± effect within the limits of the computation algorithm.
Where the Portrait mode has bigger limitations is in subject identification. ?This is particularly true of images with long narrow elements in the subject, or where there are transparent elements. ?Consider this example - where the bokeh effect has been added at two levels of intensity: ???
Notice the stem of the glass and the swizzle stick with the olives - as the bokeh effect is increased, the algorithm breaks down in it¡¯s ability to distinguish between subject and background. ? This image was taken with the newer generation iPhone 11. ?
The only way to get precise bokeh effect today is with real optics - which translates to expensive fast and heavy lenses and body. ?But for general shop photography, where some background blur effect is desirable, the iPhone can certainly fill that need. ?Like I said, for commercial work, I will always reach for my Nikon gear.
One aspect that we didn¡¯t touch on is auto focus for video work. ?Canon¡¯s phase detect system is still the leader in this area and can track moving subjects amazingly well. ?The Sony and Nikon contrast based auto focus systems are not as good for video. ?I have found the iPhone 11 auto focus at least equal to the Nikon and Sony systems if not a bit better for video work. ?When I purchased the Canon M50 for vlogging work, I found it no better than my iPhone 11 at 4K 30 fps, which is why I sold it.
David Best
https://www.instagram.com/davidpbest/
As a part time photographer, I think the use of portrait mode on the iPhone (and any other phone not using the periscope hack) is a hit or miss. The thing to keep in mind when using this mode is that the phone uses AI to blur the background, instead of using the laws of optics, which can create some unrealistic subject to background separation. It works relatively well for human subject but sometimes the subject?looks cut out like in this example from David:
while some others are very convincing:?
My current setup is filming with iPhone/iPad (90% of the time), editing on iPad with Luma Fusion and using a LED light on a tripod for directional lighting. It gets me about 80% of where I was using 10k$ worth of studio gears a few?years ago and it is so much more convenient!?
I forgot to mention one other iPhone support system I use in the shop. ? This one attaches to anything steel or cast iron with a switchable magnetic base. ? This is the Noga MA61003 Big Boy: ?
How I use it:
<IMG_0298.jpeg>
On Mar 3, 2021, at 6:31 PM, Fred Rossi < fred@...> wrote:
Folks:
Do any of you create video in your shop for social media content, sales purposes, your web site etc.? If so, what type of camera do you use (or do you simply use a smart phone)? GoPro, Sony, other? I appreciate any bits of advice.
Fred Rossi
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Re: CF531 Electrical Schematic
Blaine,
Call Felder. They can provide you with a soft copy of the electrical and also the manual if you do not have one. Typically, there is a copy of electrical in the electrical section of your machine.
The brake board on many of the Felder machines can be bypassed so one can continue to operate the machine. Felder tech will guide you to do so if it is possible on your machine.
Before you call get the S/N of the machine from machine label. They will need that to track your exact machine.
Imran
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On Mar 4, 2021, at 6:06 PM, Blaine Wright <blaine@...> wrote:
?Hello to All. I¡¯ve been reading the posts from this group for some time and really enjoy the information and discussion from the group.
This is my first posting here and hoping someone can point me in the right direction.
I have a 2015 CF531 unit. I overloaded the saw motor while ripping a large piece of old growth Douglas Fir. The motor tripped out. After letting it cool, I tried to restart, but instead tripped the main circuit breaker when I pushed start.. I then tried starting the P/J motor and Shaper motor, only to trip the main circuit breaker again.
I had an industrial electrician come to look at the unit. He could energize the motors from the control board, but they would not turn. He was able to conclude that the brake module 1B1 is shorted but was unable to bypass to ¡°release¡± the brake to any of the 3 motors.
Has anyone else experienced this problem.
Would anyone have en electrical schematic of for the CF 531.
Thanks for your assistance in advance.
Cheers
Blaine
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Alain makes a point about the simulated background blur using Portrait mode on the iPhone. ?The effect is called? bokeh, intended to simulate the depth of field focus limitations of conventional optics. It does limitations, but in my experience, the limitations are not those (¡°cut-out¡± effect) Alain mentions. ?For commercial work, I always reach for my Nikon gear, but I still marvel at the Portrait mode in the iPhone. ?
Alain refers to it as ¡°AI¡±, and for the non-technical user this description can suffice. ?In truth, it¡¯s not strictly an AI process, although it is very computationally intensive. ?In portrait mode, the iPhone uses two lenses that are about 18mm apart to capture two images, then pixel-by-pixel, it compares the two images and creates a spacial map, calculating the distance away from the camera for each pixel (all 12 million). It does this by examining the parallax difference between the two images. ?This is the kind of computational challenge that would bring a Cray super computer to its knees just 20 years ago. ?Once the spacial map is generated (about 1 second on an iPhone), the user is given a slider to control the amount of blur that is applied to the ¡°background¡± - and the blur is linear relative to the computed distance from the camera lens - the further away, the more the blur. ?The user has complete control over the application and intensity of the bokeh effect.
Here is an example of the same Cat image Alain referenced in his email - it illustrates varying degrees of bokeh application using the slider for depth of field on the iPhone: ?
Note that the image above was taken with an iPhone two generations old (the XS Max). ??
The user has complete control over the ¡°cut-out¡± effect within the limits of the computation algorithm.
Where the Portrait mode has bigger limitations is in subject identification. ?This is particularly true of images with long narrow elements in the subject, or where there are transparent elements. ?Consider this example - where the bokeh effect has been added at two levels of intensity: ???
Notice the stem of the glass and the swizzle stick with the olives - as the bokeh effect is increased, the algorithm breaks down in it¡¯s ability to distinguish between subject and background. ? This image was taken with the newer generation iPhone 11. ?
The only way to get precise bokeh effect today is with real optics - which translates to expensive fast and heavy lenses and body. ?But for general shop photography, where some background blur effect is desirable, the iPhone can certainly fill that need. ?Like I said, for commercial work, I will always reach for my Nikon gear.
One aspect that we didn¡¯t touch on is auto focus for video work. ?Canon¡¯s phase detect system is still the leader in this area and can track moving subjects amazingly well. ?The Sony and Nikon contrast based auto focus systems are not as good for video. ?I have found the iPhone 11 auto focus at least equal to the Nikon and Sony systems if not a bit better for video work. ?When I purchased the Canon M50 for vlogging work, I found it no better than my iPhone 11 at 4K 30 fps, which is why I sold it.
David Best
https://www.instagram.com/davidpbest/
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As a part time photographer, I think the use of portrait mode on the iPhone (and any other phone not using the periscope hack) is a hit or miss. The thing to keep in mind when using this mode is that the phone uses AI to blur the background, instead of using the laws of optics, which can create some unrealistic subject to background separation. It works relatively well for human subject but sometimes the subject?looks cut out like in this example from David:
while some others are very convincing:?
My current setup is filming with iPhone/iPad (90% of the time), editing on iPad with Luma Fusion and using a LED light on a tripod for directional lighting. It gets me about 80% of where I was using 10k$ worth of studio gears a few?years ago and it is so much more convenient!?
I forgot to mention one other iPhone support system I use in the shop. ? This one attaches to anything steel or cast iron with a switchable magnetic base. ? This is the Noga MA61003 Big Boy: ?
How I use it:
<IMG_0298.jpeg>
On Mar 3, 2021, at 6:31 PM, Fred Rossi < fred@...> wrote:
Folks:
Do any of you create video in your shop for social media content, sales purposes, your web site etc.? If so, what type of camera do you use (or do you simply use a smart phone)? GoPro, Sony, other? I appreciate any bits of advice.
Fred Rossi
|
CF531 Electrical Schematic
Hello to All. I¡¯ve been reading the posts from this group for some time and really enjoy the information and discussion from the group.
This is my first posting here and hoping someone can point me in the right direction.
I have a 2015 CF531 unit. I overloaded the saw motor while ripping a large piece of old growth Douglas Fir. The motor tripped out. After letting it cool, I tried to restart, but instead tripped the main circuit breaker when I pushed start.. I then tried starting the P/J motor and Shaper motor, only to trip the main circuit breaker again.
I had an industrial electrician come to look at the unit. He could energize the motors from the control board, but they would not turn. He was able to conclude that the brake module 1B1 is shorted but was unable to bypass to ¡°release¡± the brake to any of the 3 motors.
Has anyone else experienced this problem.
Would anyone have en electrical schematic of for the CF 531.
Thanks for your assistance in advance.
Cheers
Blaine
|
firstly?? Felder won't do it... already asked, nor do they have anyone to recommend to do it
they are not very helpful 'outside the box'...
which is why I'm asking on the forum
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I wonder if it would be work asking for a quote directly from Felder? It's certainly not warranty work, but I would think the technician should know the machine inside- and out-, and I would think they'd be able to knock out a cutter swap pretty quickly. Felder may ask for a waiver considering they'd be swapping to an aftermarket head. Anyways, it's free to ask, right??
Alternatively, you can ask around at your local woodworking- or contractor-supply shop to see if they know any freelance machinery repair guys? I think there's at least one or two here in the Minneapolis area who just tool around fixing machines. The last time I looked into it I think they were billing out at ~$100/hr....?
--
Tom Gensmer
Heritage Home Renewals, LLC
Minneapolis, MN
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On my 2001 KF700, I have this sticker on the shaper end
I have no clue what this is asking me to do. Closest thing in the manual would be shaper elevation and angle worm gear and associated crescent path in plate.
Anyone, goat a clue?
Imran
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Quick update for those that are interested on the k940s zci, chips are starting to ?! Should be complete next week...
Interesting that he used one of our edm¡¯s to rough cut the blanks, guess he wanted to start with some super accurate blanks?, left some interesting accurately cut scraps...
Here is the scoring section being milled in the Hurco...
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On Jan 19, 2021, at 11:26 PM, Mark Kessler <mkessler10@...> wrote:
? So I decided I needed a zci for the new k940, thought I would get away without one but here I am... I reached out to David Best as I knew he had made one for the kappa. The k940 saw unit, top casting and 3 plastic segments appear to be the same however I have the LED lights so wasn¡¯t sure if David would be willing to modify his design and if it would be worth the time/cost to do so. After a few back and forth emails David decided to not take it on, a few key dimensions were slightly different and could require a few iterations to get it right which I agreed.?
David was so kind in allowing me to use his drawings, however after I started to model it and compared it to my parts in hand it wasn¡¯t adding up so I had to abandon the drawings given and just start from scratch from my actual parts.
So the first task was to model the LED section first as it is the most difficult to work out, then 3d print, check fit and make adjustments (done) After that 3d print all the parts to confirm (tomorrow) and finally have machined in aluminum (tbd)
The other unknown was how was the LED installed, the only way to find out was to remove it which would obviously void the warranty but after studying the elect schematic and looking at the parts drawings I convinced myself that it was no big deal and easy to fix if I screwed up the LED strip.?
So here are some progress pics... note, the 3d printed LED section is short due the the 3D printer bed not being long enough, a bolt hole is missing so it is not tight against the cast...
??
Below is the auto score feature in action with the as delivered LED section?
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Fred Rossi
imran
David P. Best
Tom Gensmer
