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Re: RL 125 CFM with new filter

 

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Thanks Dave. I caution I read with slowing motor (not designed for that purpose) is that fan slows with it. I think that really becomes an issue if speed is substantially reduced. Unfortunately, my VFD (old) does not display current; I will double check the manual.

Thanks again for the ideas. I will work on these on Monday.

Imran

On Jan 23, 2021, at 12:45 PM, David Kumm <davekumm@...> wrote:

?
Slowing the motor reduces the amp draw so no issues with the motor.? you can graph a system curve that way and see if increasing the Hz to 65 yields any additional cfm if your meter can stand it.? You can also adjust the gates to match the cfm with the readings of the slowed motor and compare.? The vfd will measure amp draw so you don't need a meter.? I watch the amp draw more than the hz on my three phase collector.?? When you amps go down to a certain point with certain ports open, I know the filters need blowing out.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:32 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
David,

Thanks for the idea. I can measure current draw but your response me think that maybe I can run the motor slower (since i run it with VFD) just for a short time to see if I can get the CFM in meter range. As our resident motor expert, you think it would be okay to do so? I am hoping that it would only take a bit 80-90% of full speed. It is 4KW, 3 phase motor.

Imran

On Jan 23, 2021, at 12:14 PM, David Kumm <davekumm@...> wrote:

?
Imran, can you measure the amp draw with all gates open and compare that to the cfm reading ?? Then close various gates or partially and match the amp draw with the new cfm readings to get a rough fan curve.? Down the road you can compare amp readings and plot them against your prior curve to see how the filter affects the cfm.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:10 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
Does anyone have an idea how much CFM will be reduced when new filter gets dirty? I have few days to return the anemometer and don't have much planned work.

I am curious what the collective thinks about making just a comparative readings with partially closed gates. Just looking for a solution to determine the status of the filter in future.

BTW, I failed to report that the light (for difference in pressure) never turned off with new filter installed. I may have to open the sensor like someone else did here.

Finally, Bill is correct, the differential pressure sensor compares negative pressure below the filter (dirty side) with ambient.

Imran


Re: RL 125 CFM with new filter

 

开云体育

Slowing the motor reduces the amp draw so no issues with the motor.? you can graph a system curve that way and see if increasing the Hz to 65 yields any additional cfm if your meter can stand it.? You can also adjust the gates to match the cfm with the readings of the slowed motor and compare.? The vfd will measure amp draw so you don't need a meter.? I watch the amp draw more than the hz on my three phase collector.?? When you amps go down to a certain point with certain ports open, I know the filters need blowing out.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:32 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
David,

Thanks for the idea. I can measure current draw but your response me think that maybe I can run the motor slower (since i run it with VFD) just for a short time to see if I can get the CFM in meter range. As our resident motor expert, you think it would be okay to do so? I am hoping that it would only take a bit 80-90% of full speed. It is 4KW, 3 phase motor.

Imran

On Jan 23, 2021, at 12:14 PM, David Kumm <davekumm@...> wrote:

?
Imran, can you measure the amp draw with all gates open and compare that to the cfm reading ?? Then close various gates or partially and match the amp draw with the new cfm readings to get a rough fan curve.? Down the road you can compare amp readings and plot them against your prior curve to see how the filter affects the cfm.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:10 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
Does anyone have an idea how much CFM will be reduced when new filter gets dirty? I have few days to return the anemometer and don't have much planned work.

I am curious what the collective thinks about making just a comparative readings with partially closed gates. Just looking for a solution to determine the status of the filter in future.

BTW, I failed to report that the light (for difference in pressure) never turned off with new filter installed. I may have to open the sensor like someone else did here.

Finally, Bill is correct, the differential pressure sensor compares negative pressure below the filter (dirty side) with ambient.

Imran


Re: RL 125 CFM with new filter

 

开云体育

David,

Thanks for the idea. I can measure current draw but your response me think that maybe I can run the motor slower (since i run it with VFD) just for a short time to see if I can get the CFM in meter range. As our resident motor expert, you think it would be okay to do so? I am hoping that it would only take a bit 80-90% of full speed. It is 4KW, 3 phase motor.

Imran

On Jan 23, 2021, at 12:14 PM, David Kumm <davekumm@...> wrote:

?
Imran, can you measure the amp draw with all gates open and compare that to the cfm reading ?? Then close various gates or partially and match the amp draw with the new cfm readings to get a rough fan curve.? Down the road you can compare amp readings and plot them against your prior curve to see how the filter affects the cfm.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:10 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
Does anyone have an idea how much CFM will be reduced when new filter gets dirty? I have few days to return the anemometer and don't have much planned work.

I am curious what the collective thinks about making just a comparative readings with partially closed gates. Just looking for a solution to determine the status of the filter in future.

BTW, I failed to report that the light (for difference in pressure) never turned off with new filter installed. I may have to open the sensor like someone else did here.

Finally, Bill is correct, the differential pressure sensor compares negative pressure below the filter (dirty side) with ambient.

Imran


Re: AD941 vs. Baileigh JP-1898-NC

 

Ahhh, I just took that back cover off my AD941.? Yes, it's a cheap thing.? If you find a flexible low cost option let me know.
Dave Davies

On Sat, Jan 23, 2021 at 11:12 AM PK <paul.kellymjc@...> wrote:
Thanks for the quick responses everyone!

I also go t a call form Carl today!? Thanks Carl!

The guard I was talking about was more accurately described as the cutter cover that mounts behind the fence...? I purchased the comfort guard for in front of the fence.

Here are some pics.? Would be great if someone made something more elegant...

PK
@pkwoodworking



--
Dave & Marie Davies

318-219-7868


Re: RL 125 CFM with new filter

 

开云体育

Imran, can you measure the amp draw with all gates open and compare that to the cfm reading ?? Then close various gates or partially and match the amp draw with the new cfm readings to get a rough fan curve.? Down the road you can compare amp readings and plot them against your prior curve to see how the filter affects the cfm.? Dave


From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, January 23, 2021 12:10 PM
To: [email protected] <[email protected]>
Subject: Re: [FOG] RL 125 CFM with new filter
?
Does anyone have an idea how much CFM will be reduced when new filter gets dirty? I have few days to return the anemometer and don't have much planned work.

I am curious what the collective thinks about making just a comparative readings with partially closed gates. Just looking for a solution to determine the status of the filter in future.

BTW, I failed to report that the light (for difference in pressure) never turned off with new filter installed. I may have to open the sensor like someone else did here.

Finally, Bill is correct, the differential pressure sensor compares negative pressure below the filter (dirty side) with ambient.

Imran


Re: AD941 vs. Baileigh JP-1898-NC

 

Thanks for the quick responses everyone!

I also go t a call form Carl today!? Thanks Carl!

The guard I was talking about was more accurately described as the cutter cover that mounts behind the fence...? I purchased the comfort guard for in front of the fence.

Here are some pics.? Would be great if someone made something more elegant...

PK
@pkwoodworking


Re: RL 125 CFM with new filter

 

Does anyone have an idea how much CFM will be reduced when new filter gets dirty? I have few days to return the anemometer and don't have much planned work.

I am curious what the collective thinks about making just a comparative readings with partially closed gates. Just looking for a solution to determine the status of the filter in future.

BTW, I failed to report that the light (for difference in pressure) never turned off with new filter installed. I may have to open the sensor like someone else did here.

Finally, Bill is correct, the differential pressure sensor compares negative pressure below the filter (dirty side) with ambient.

Imran


Re: A note of caution

 

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I feel bad for the people with positional vertigo.? Always there waiting , a wrong move and you are non functional.? Dave


From: [email protected] <[email protected]> on behalf of Cliff Rohrabacher, Esq. <rohrabacher@...>
Sent: Saturday, January 23, 2021 10:14 AM
To: [email protected] <[email protected]>
Subject: Re: [FOG] A note of caution
?

On 1/22/21 7:38 PM, David Kumm wrote:
> on and off for a year.? In hospital twice and multiple attacks.


OUCH? That's?? way more than I had







Re: A note of caution

Cliff Rohrabacher, Esq.
 

On 1/22/21 7:38 PM, David Kumm wrote:
on and off for a year.? In hospital twice and multiple attacks.

OUCH? That's?? way more than I had


Re: A note of caution

 

Wow, that's scary Mark. I wonder if something similar happened to my shop mate Craig. Given how we found him, with lumber both under him and on top of him, and his leg twisted up in the ladder. We will likely never know.

I too am in the age group (still under 50 by a couple) where I largely feel invincible. This was a sobering reminder that doesn't matter. Craig just turned 60 and is in better shape than I am. His condition is stable, the brain bleeding is under control and no surgery is going to be required. His cognitive tests look good. He will be in the hospital at least a few more days while they monitor things.

We may have to reassess how we store lumber and make accessing it via the forklift easier.

Jason Holtz
J. Holtz Furniture

3307 Snelling Ave. South
Minneapolis, MN 55406
612 432-2765

--
Jason
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406


Re: AD941 vs. Baileigh JP-1898-NC

 

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Tha ad941 standard guard is as shown below, is the guard you are talking about? When I bought mine last year I was actually looking at the ad741 which also comes with that guard so I added the “comfort” guide which is what imran is showing has 2 hinged joints) which i think is $300-$350 (it’s in the eshop). ?One thing lead to another and I was looking at the ad941, when I told the salesman to add the comfort guard he told me - yea, it shows the other guard in the pic be we swap it out with the comfort guard when we ship it to you. That was in Oct of 2019, even the replacement they sent me with a mid year 2020 had the comfort guard.




Regards, Mark



On Jan 23, 2021, at 9:25 AM, imranindiana via groups.io <imranindiana@...> wrote:

?
Congratulations. Great to hear a successful delivery story.

I see that Felder has changed the guard design. I have the flip up arm design. Anyhow, they still show this on dual51?

<image1.jpeg>


I am sure mine has two articulating joints.

I think Suva makes the segmented flexible guard but I cannot find it on the net. I have seen it posted here. This is what I see from them on scott & sergeant

<image2.jpeg>



Imran?

On Jan 23, 2021, at 12:37 AM, PK <paul.kellymjc@...> wrote:

?Well,

It all happened really quickly, but the machine was delivered today!? The freight company Felder picked was great and the driver for the liftgate service was seasoned and really knew what he was doing.? He was helpful and delivered it up my driveway and into the garage.? He also was cool with being filmed with 2 cameras!

It is more than I hoped it would be!? ? Really excited with the quality and precision.

Delivered at 9am but had work before I could dig in.? With the help of my 2 sons, we got a ramp built, removed it from its pallet and mounted the mobility kit.

The fence rail alignment is a mystery, but seems to be ok.

I really want to change the power cord to a larger gauge and a longer length, but the warning sticker says DO NOT TOUCH...? I will call Carl Knapp on Monday.

I did have a question for the group.? I do not love the cutter head guard, seems so out of place on this machine. I have seen some pictures of people that have replaced the final metal piece with something more flexible, like a segmented plastic serpentine device.

Has anyone had any luck replacing that cheap flimsy metal piece?

Thank you all for the support and the ideas, I could not be any happier.

I will be posting a full delivery, uncrating and setup video to the YouTube channel soon... In 4k...

PK
@pkwoodworking
??


Re: AD941 vs. Baileigh JP-1898-NC

 

开云体育

Congratulations. Great to hear a successful delivery story.

I see that Felder has changed the guard design. I have the flip up arm design. Anyhow, they still show this on dual51?



I am sure mine has two articulating joints.

I think Suva makes the segmented flexible guard but I cannot find it on the net. I have seen it posted here. This is what I see from them on scott & sergeant




Imran?

On Jan 23, 2021, at 12:37 AM, PK <paul.kellymjc@...> wrote:

?Well,

It all happened really quickly, but the machine was delivered today!? The freight company Felder picked was great and the driver for the liftgate service was seasoned and really knew what he was doing.? He was helpful and delivered it up my driveway and into the garage.? He also was cool with being filmed with 2 cameras!

It is more than I hoped it would be!? ? Really excited with the quality and precision.

Delivered at 9am but had work before I could dig in.? With the help of my 2 sons, we got a ramp built, removed it from its pallet and mounted the mobility kit.

The fence rail alignment is a mystery, but seems to be ok.

I really want to change the power cord to a larger gauge and a longer length, but the warning sticker says DO NOT TOUCH...? I will call Carl Knapp on Monday.

I did have a question for the group.? I do not love the cutter head guard, seems so out of place on this machine. I have seen some pictures of people that have replaced the final metal piece with something more flexible, like a segmented plastic serpentine device.

Has anyone had any luck replacing that cheap flimsy metal piece?

Thank you all for the support and the ideas, I could not be any happier.

I will be posting a full delivery, uncrating and setup video to the YouTube channel soon... In 4k...

PK
@pkwoodworking
??


Re: A3-31 Specs

 

Thank You for all the replies and helpful information.?
The problem ended up being on the hinge side was so hung up and would not adjust down even with the bolts loose. I ended up using a clamp and making the adjustment and all is well. I also found a very useful video on setup on utube.
JT?


Re: AD941 vs. Baileigh JP-1898-NC

 

Well,

It all happened really quickly, but the machine was delivered today!? The freight company Felder picked was great and the driver for the liftgate service was seasoned and really knew what he was doing.? He was helpful and delivered it up my driveway and into the garage.? He also was cool with being filmed with 2 cameras!

It is more than I hoped it would be!? ? Really excited with the quality and precision.

Delivered at 9am but had work before I could dig in.? With the help of my 2 sons, we got a ramp built, removed it from its pallet and mounted the mobility kit.

The fence rail alignment is a mystery, but seems to be ok.

I really want to change the power cord to a larger gauge and a longer length, but the warning sticker says DO NOT TOUCH...? I will call Carl Knapp on Monday.

I did have a question for the group.? I do not love the cutter head guard, seems so out of place on this machine. I have seen some pictures of people that have replaced the final metal piece with something more flexible, like a segmented plastic serpentine device.

Has anyone had any luck replacing that cheap flimsy metal piece?

Thank you all for the support and the ideas, I could not be any happier.

I will be posting a full delivery, uncrating and setup video to the YouTube channel soon... In 4k...

PK
@pkwoodworking
??


Re: A note of caution

 

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Sorry to hear this, the whole grabbing lumber off a rack on a ladder is risky business - a few months ?back I was on the third step (top one) of one of those lightweight aluminum step stools that have the wide platform at the top but the other 2 steps are narrow, i grabbed an 8/4 x 8” x 9’ piece of Walnut of the top rack above my head and before I knew it I was on the floor, couldn’t even move for like what seamed 30 min. I was pretty lucky I didn’t wack my head on my workbench as i just missed it, I fell backwards and my hip landed on a corner of the bandsaw table before I hit the ground. Had my phone but it was on the workbench and I couldn’t get up, seriously thought i was in big trouble as I couldn’t get up. Pretty sure what happened was when I picked up the board it was off center and the inertia from it just flung me off the ladder.?

I think , at least for me who originally started out on their own at 19 did a lot of everything on there own in the beginning, there were no limits if it needed to get done it did now that I am getting older (50+, boo-hoo) I have found that I need to be a bit more careful in what I take on by myself (see above)...



Regards, Mark



On Jan 22, 2021, at 6:40 PM, Cliff Rohrabacher, Esq. <rohrabacher@...> wrote:

?

yah? weird shit? can happen.

The other day while? manhandling some large 2.5" thick walnut slabs on the bandsaw? I? lost my balance the room started spinning I had to let go the lumber and grab something to remain upright.

Turns? out there are little calcium crystals in the inner ear that can come loose and? out of nowhere you can't balance.? the room spins and? you are really? disoriented.

There are exercises? one can do to remove the loose crystals and? get them out from where they fell when they got dislodged ad? then you are golden again. takes all of a couple minutes. But man? it gives you absolutely? no warning.? One second everythign is fine and the next is ain't.



On 1/22/21 9:50 AM, Jason Holtz wrote:

I know most of the folks in this group are hobbyists, and as such are probably in the shop alone most of the time. Please carry your phone on your person at all times in case of an accident.

Yesterday in the shop, there were three of us fortunately. I'm usually aware of my surroundings and am quick to offer help before someone asks for it. Not yesterday though. I was applying finish, had my earphones on in my own world. That's when I heard the crash from across the shop. My shop mate had been on a ladder getting some wood off of the storage rack. We found him on the floor on his back, twisted up in a pile of wood and the ladder. He was unconscious and bleeding badly from the back of his head. Called 911. We got all the wood/ladder moved off of him and I rolled him to his side and applied pressure to his wound to stop the bleeding. I kept talking to him and he came to, and was totally incoherent for a couple minutes. He started to make some sense after a couple minutes, but had no idea what happened. The paramedics arrived within 10 minutes. They put a neck brace on him and got him sitting up for a minute, but he was very nauseous. They then put him on a gurney and took him out to the ambulance where they checked him out further. Ended up at HCMC, a level one trauma center. CT scan showed a brain bleed and skull fractures. His cognitive test results were good. Hoping for the best. He may be there a while. I shudder to think about if he would have been in the shop alone.?

Please check your risk factors. Ask for help when you need it. Your friends and family want you around.
Jason
?
--
Jason
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406


Re: zci for k940

 

开云体育

Cliff, the only 3d printers I have used are a zpinter which is a powder based printer, form3 and Markforged. Our plant in Luxembourg has a metal 3d printer and I have handled the parts and can tell you they are a bit rough and need post processing to finish them off nice, I don’t know the cost per part of that machine (we don’t really care in prod dev) but I can tell you the cost of that machine and the special room that needed to be built was well over 3 mil, so that that would eliminate it from the mix from being an ?affordable solution.?

The Markforged can print very strong (stronger than metal in some cases) and accurate parts, I would consider it for a replacement for the metal (alum) section for the k940, Kappa , the parts I printed on the Markforged ?and showed in this thread were printed in what i will call draft mode meaning the settings in the slicing software were set to print quick with limited material and resolution even with that I think (and I am guessing) the material cost for the three parts was around $70.?



?the Markforged?

Regards, Mark



On Jan 21, 2021, at 2:29 PM, Cliff Rohrabacher, Esq. <rohrabacher@...> wrote:

?

I should think? that some enterprising? person? would long ago? have? started churning out 3-d printer versions of these things.

My Hammer? ZCI iused to be a real PITA? to make but I figured? out how to produce them? more efficiently with? fixturing? on the router table.? Now that I'm running a full size vertical knee mill I'll prolly take the job to the milling machine and speed it up even more.

There's a guy who sells the ZCI for hammer machines for? almost $70,? not a price I'd pay.??


On 1/19/21 11:25 PM, Mark Kessler 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?




Regards, Mark



Re: zci for k940

 

开云体育

Mark,

That makes sense. It is good to know that plastic might be an option, in case I ever get there.

Funny that I have had the blade chip away on the slider (others have reported it as well) even though it is 3 to 5 mm away but I do not recall any divots on the cast side into the plastic throat plates.

Imran

On Jan 22, 2021, at 9:48 PM, Mark Kessler <mkessler10@...> wrote:

?
Imran,

Thanks, I am having the parts milled in aluminum because there will be no cost and they will be more robust and accurate than a 3d printed part, if it wasn’t for the free part I would just use the 3d printed parts long term, certainly would be strong enough if i added more carbon fibre to the build along with 100% infill. Not really that worried about the metal close to blade thing, its alum and not really seeing how the blade would contact it. I did end up moving the bolt holes that hold the wood insert in back another 1 mm.

Regards, Mark



On Jan 20, 2021, at 10:34 PM, imranindiana via groups.io <imranindiana@...> wrote:

?
Mark,

That looks great. BTW, plastic is safer than metal to have around the blade. Are you having the parts milled (i think you mentioned AL) because some portions of the design are too thin to be robust in plastic?

Imran?

On Jan 20, 2021, at 10:00 PM, Mark Kessler <mkessler10@...> wrote:

?Welp looks like I am ready to have metal cut.?

- The scoring section was to long to fit on the 3d print bed so I made it in 2 pieces and connected it with a half lap dovetail.
- I modified the pockets for the dust shield to allow a little more adjustment, could have just made them go through the top except it would have left a corner that houses the LED unsupported and somewhat floating in space, probably ok but not as clean (of course would be hidden by the wood insert but...)
- I tapped the holes for the insert, I don’t like the m8 flat heads so close to the blade, probably ok but may just use some low head cap screws which are narrower and low because the insert is only 8mm thick but they are expensive and I can be cheap - out of the bazillion bolts we have at work in the assembly areas and the tool crib I can’t find any... could bling it up and use brass but then I would just be show boating ?
- The wood insert shown I just banged out tonight so not so refined, still need to cut the slot for the riving knife and will probably use it as is until the completed parts arrive - ?I also 3d printed a fixture to do the cutout with a 3/8” flush trim bit which should be done tomorrow?

<image0.jpeg>


<image1.jpeg>


<image2.jpeg>
<image3.jpeg>


Regards, Mark



On Jan 20, 2021, at 11:44 AM, Anthony Quesada <tonymiga2@...> wrote:

?Mark,?

Sorry that you weren't able to purchase a ZCI, but selfishly I'm very much enjoying watching you work though this design. ?Very impressive! ?


Re: zci for k940

 

开云体育

Not sure If I responded Anthony, the dovetail trick works great on the markforged printer, the software i used for the design is called Shapr3d (spelled that way) its for ipad with pencil and it is really great, the modeling engine that it uses is from Siemens NX which is a full blown hardcore industrial program?

Regards, Mark



On Jan 21, 2021, at 8:29 AM, Anthony Quesada <tonymiga2@...> wrote:

?Mark,?

Love that dovetail detail for parts that dont fit on the 3d bed. I will have to remember that trick for future projects. ?What software are you using for your design? ?Sorry if you already mentioned it. ?

Looking fantastic,?

Anthony?

On Jan 20, 2021, at 10:34 PM, imranindiana via <imranindiana@...> wrote:

BTW, plastic is safer than metal to have around the blade. Are you having the parts milled (i think you mentioned AL) because some portions of the design are too thin to be robust in plastic?



Re: zci for k940

 

开云体育

Imran,

Thanks, I am having the parts milled in aluminum because there will be no cost and they will be more robust and accurate than a 3d printed part, if it wasn’t for the free part I would just use the 3d printed parts long term, certainly would be strong enough if i added more carbon fibre to the build along with 100% infill. Not really that worried about the metal close to blade thing, its alum and not really seeing how the blade would contact it. I did end up moving the bolt holes that hold the wood insert in back another 1 mm.

Regards, Mark



On Jan 20, 2021, at 10:34 PM, imranindiana via groups.io <imranindiana@...> wrote:

?
Mark,

That looks great. BTW, plastic is safer than metal to have around the blade. Are you having the parts milled (i think you mentioned AL) because some portions of the design are too thin to be robust in plastic?

Imran?

On Jan 20, 2021, at 10:00 PM, Mark Kessler <mkessler10@...> wrote:

?Welp looks like I am ready to have metal cut.?

- The scoring section was to long to fit on the 3d print bed so I made it in 2 pieces and connected it with a half lap dovetail.
- I modified the pockets for the dust shield to allow a little more adjustment, could have just made them go through the top except it would have left a corner that houses the LED unsupported and somewhat floating in space, probably ok but not as clean (of course would be hidden by the wood insert but...)
- I tapped the holes for the insert, I don’t like the m8 flat heads so close to the blade, probably ok but may just use some low head cap screws which are narrower and low because the insert is only 8mm thick but they are expensive and I can be cheap - out of the bazillion bolts we have at work in the assembly areas and the tool crib I can’t find any... could bling it up and use brass but then I would just be show boating ?
- The wood insert shown I just banged out tonight so not so refined, still need to cut the slot for the riving knife and will probably use it as is until the completed parts arrive - ?I also 3d printed a fixture to do the cutout with a 3/8” flush trim bit which should be done tomorrow?

<image0.jpeg>


<image1.jpeg>


<image2.jpeg>
<image3.jpeg>


Regards, Mark



On Jan 20, 2021, at 11:44 AM, Anthony Quesada <tonymiga2@...> wrote:

?Mark,?

Sorry that you weren't able to purchase a ZCI, but selfishly I'm very much enjoying watching you work though this design. ?Very impressive! ?


Re: motor(s) overheating on vintage SCM Minimax

 

The motors are single phase 3.6 HP. When the motors have shut themselves off, they have been quite hot to the touch. Yes, they are fan cooled; the shop is always about 75- 80 degrees, and the motors have no sawdust build-up. Bearing sound good. Saw runs smooth and strong. SCM techs I talked to years ago seemed to think the motors were just wearing out. I did replace the main switch at one point, and that didn't change anything. I will see about measuring the amp draw, but electrical things are not my cup of tea. I'm just wondering what to say to the potential buyer without totally scaring him off. I will check to verify the cost of new motors, in case he ever needed to replace them.??