|
Re: Auxiliary table on FB bandsaw
Thanks Lucky,
Good to know the Felder solution?isn't viable. I'd hope that we would be able to put it on and leave it there, but in reality that won't happen. We have done away with the stock fence, as we modified the round bar fitting to mount the feeder to. We were hoping to dedicate this saw to resawing, but that may be silly. The amount of material that needs resawing in our shop is not that frequent or great. Changing the blade and setting up the current fiddly?Carter guides takes about half an hour and you're cutting like nobody's business. I'd like to save that time but it probably doesn't justify the cost of a third bandsaw and finding a spot for it in the shop. I think I'll look at fabricating something myself.? Jason 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: Clamp-Together pipe for dust collection
#dustcollection
开云体育David, granted it has been a while, but I do not recall any consideration to horizontal vs vertical in the calculations. Imran On Jan 19, 2021, at 12:10 AM, David Kumm <davekumm@...> wrote:
?
I think that generally the 4000 fpm is vertical speed and 3500 is horiizontal.? Another key is to generate the proper velocity into the cyclone inlet to maximize the separation and protect the filters.? Each cyclone has a range for inlet speed that should be
designed into the system.
The Oneida system that is interesting is the smart system which speeds up the impeller to produce more air under pressure.? I think John here has one.? Oneida uses a good quality Baldor motor with a larger frame than CV but their regular 5 hp systems run a 15" impeller similar to the CV 1800.? The Max boosts that with a 16" impeller.? I don't know if CV went to a larger frame motor on their metal cyclone.? The weight of the motor on their 1800 and max was a limiting factor and why they went with a smaller frame.? A DC motor works hard and given a choice, I'd prefer the larger bearings and shaft but then I like the CV cyclone design better than oneidas. Oneida uses a cast AL impeller, CV uses steel.? Filters are also rated for cfm per sq ft so you need to pay attention to that.? CFM at the pressure your system runs at is what I consider most important.? Filtration quality of spun bond, Nano, or HEPA differs but it is the air that doesn't make it to the filters that hurts you.? The filters that minimize pressure drop and maximize cfm beat filters that are a point or two higher in MERV rating IMO.? Most important, don't take my opinion, do your own research. Dave From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Monday, January 18, 2021 11:11 PM To: [email protected] <[email protected]> Subject: Re: [FOG] Clamp-Together pipe for dust collection #dustcollection ?
Bird,
The risk of going too big is drop in air speed required to carry chips. IIRC, 4000 ft/min is the goal for the main duct.
So in designing the DC system one is trying to minimize the overall resistance so that adequate CFM is available at the machine while ensuring that the air speed does not drop below minimum requirement.
Imran
On Jan 18, 2021, at 10:32 PM, Bird Cupps <birdc@...> wrote: ?
On the subject of dust collecting, I have quite a bit of 4’’ spiral pipe if anyone is interested. If I remember right, Archarya is in Hawaii, so that’s probably not going to work to get it to him.
Is there any harm in sizing up ducts even if you don’t need it? I did some calculating and figured I needed a 6’’ line but I have 7’’ and 8’’ pipe on hand so figured I’d use that. I picked up a dust gorilla cyclone at an auction and it has an 8’’ entry, so
I need to get to 8’’ at some point.
Bird Cupps
Mount Horeb, Wisconsin
|
|
Re: Clamp-Together pipe for dust collection
#dustcollection
From Wynn Environmental's?FAQs RE rotating arms in filters: "Q: Do any of your filters have cranks with paddles? A: No. Paddles rub the filter media and pin-hole leaks?will develop.? Our filters incorporate the same filter media used in large industrial systems.? This filter media is designed to be cleaned using compressed air." Tops are removal to check, but it's easier to just blow compressed air from the outside in--they're designed for dust to fall into the collection bag when you do that. On Tue, Jan 19, 2021 at 8:54 AM KRPatel via <kamalsonal=[email protected]> wrote: Jason...thanks for sharing your experience on the CV.? The main deficit for these systems is fine dust collection AND clogging of the filter.? Some of the systems out there have a feature where one can rotate an arm within or on top of the cannister filter that knocks off any dust in the pleats.? ?? |
|
Re: Clamp-Together pipe for dust collection
#dustcollection
开云体育I am not sure any wiper solution works for dislodging fine dust in long term. You need reverse pulse jet cleaning that is becoming common on higher end systems. Imran On Jan 19, 2021, at 8:54 AM, KRPatel via groups.io <kamalsonal@...> wrote:
?Jason...thanks for sharing your experience on the CV.? The main deficit for these systems is fine dust collection AND clogging of the filter.? Some of the systems out there have a feature where one can rotate an arm within or on top of the cannister filter that knocks off any dust in the pleats.? ??
|
|
Re: Start Capacitor Value
开云体育I was happy to see that the cap would ship same day, even though i placed the order after 2pm. Got an email saying it did not ship yesterday but would ship today and is coming next day air. That is service. Thumbs up for Mouser. We used them at work but this is first time I have placed an order with them. Imran? On Jan 18, 2021, at 4:10 PM, imranindiana via groups.io <imranindiana@...> wrote:
? Laguna replied that they have replacement cap in stock for $45 plus shipping. So it took another back and forth to eventually confirm that indeed cap is 50uF as shown on motor label. In this case Mouser was the best place with only $7.99 for 2nd day shipping. Polypropylene film cap was $16. Imran On Jan 16, 2021, at 9:12 PM, imranindiana via groups.io <imranindiana@...> wrote: ? JM, Thanks for the feedback. I suspect the same, i.e., label has the start cap value. Not sure why the field name “cond” - likely stands for conditioning. Not sure know what else could it be. Anyhow, I thought the person at laguna would be able to confirm on phone but no such luck, need to wait for the tech dept to respond. Mine is a two wire leaded, without terminals. I have found similar sized ones on the sites i have ordered from before however the dia is 45mm vs 50mm. So still looking. I had checked newark but not the other site you sent so will check them out. BTW, polypropylene caps are more robust (usually specified for run caps) but I try to use them for start cap as well. I was hoping to get a confirmation by end of day yesterday. I think it is low risk to order it based upon label value but I may wait till monday. Imran? On Jan 16, 2021, at 8:04 PM, jjmotzi <john.motzi@...> wrote: ?The label says 50?F (microFarads) 450V.? I needed to replace the start capacitor on my 20 year old Inca table saw earlier this year.? Slightly larger motor (2.2 kW) than what you have here, but similar.? Typically you can find replacements at Newark electronics Newark.com, or ? Mine was a 4-wire lead so I replaced with the same.? Easier to find are the 2-wire models.? Mine was a 40?F but I'll give you the links anyway to get you in the right sections of the webstores: 4-Wire Leads: 2-Wire Leads:?? I chose the model based on the correct specs but also the physical dimensions so it would mount the same way on my motor. Hope this helps JM |
|
Re: Clamp-Together pipe for dust collection
#dustcollection
开云体育Jason, Generally I agree but for where I live, Rockler had the best price for the gauge offered for the spiral pipe and many fittings. Imran On Jan 19, 2021, at 12:31 AM, Jason Holtz <jholtzy@...> wrote:
? A couple of observations. One, don't buy anything at Rockler if you can get it elsewhere. Their pricing on most things is ridiculous, hardware in particular.
As someone else noted, you've got quite a bit of equipment for that CV system. We had the CV Max in our shop for a few years, connected the jointer, planer, chop saw, lathe, KF700. It used to be connected to the widebelt?sander, but it hates fine dust. For the record I hated that collector. It's too expensive to require a full day to assemble the stupid thing, before you can install it. The filter's pleats are way too small. They get clogged with dust too quickly and then you loose?effective suction. When it's mounted on a wall, you can't access the filter on the back side to knock the stuff loose either. I was glad to see it go, and I suppose it was poetic justice when it fell off the forklift and the cone shattered into a million pieces. Too bad I had to buy a new one since I'd already sold the damn thing. I've been much happier with the 4 Oneida products we've had in the shop. Our current 15 HP is more than adequate for our entire shop. Jason 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: Auxiliary table on FB bandsaw
开云体育Jason:You can buy an infeed extension table (with leg) that fits on that round bar. It is diabolically complicated and fiddly to set up. And it weighs a lot because it is pressed steel rather than machined aluminium. I have the extension, but don’t use it much because it is so awkward to remove and replace. From recollection, it is 800mm x 150mm. Have you dispensed with the fence? I have purchased numerous “f-rail” mounts which can be added on the sides of the FB540 (I’ve done this on the back and side of mine) so you can use a normal f-rail mounted extension tables. If you’re using your fancy feeder now, and have no use of the fence, this would be the way to go. But if you want to retain the fence, then you have to decide what to do for an extension table and that round bar. Considering my experience with the OEM solution, I’d be very tempted to make an extension table and leg in house. It wouldn’t be that hard to make or purchase a fitting that would attach to the round bar, and just make the rest out of timber. Anyway, sing out if you want pictures, or more info. Good luck.
Warm regards, Lucky
|
|
Auxiliary table on FB bandsaw
We have a FB540? bandsaw in our shop. I posted a while back about the new belt feed resaw feeder we picked up at auction for it. The thing works phenomenally. The one thing that would improve the setup is having an infeed table flush with the saws table. The feeder's belt and roller extend past the front edge of the table, and the belt is grabbing the work before the table starts, sometimes below it's surface and it gets hung up. An infeed table would solve the problem. Can I mount an F rail on there behind the round bar? That mounting post looks like it would be in the way.
 -- Jason J. Holtz Furniture 3307 Snelling Ave. South Minneapolis, MN 55406 |
|
Re: Clamp-Together pipe for dust collection
#dustcollection
A couple of observations. One, don't buy anything at Rockler if you can get it elsewhere. Their pricing on most things is ridiculous, hardware in particular.
As someone else noted, you've got quite a bit of equipment for that CV system. We had the CV Max in our shop for a few years, connected the jointer, planer, chop saw, lathe, KF700. It used to be connected to the widebelt?sander, but it hates fine dust. For the record I hated that collector. It's too expensive to require a full day to assemble the stupid thing, before you can install it. The filter's pleats are way too small. They get clogged with dust too quickly and then you loose?effective suction. When it's mounted on a wall, you can't access the filter on the back side to knock the stuff loose either. I was glad to see it go, and I suppose it was poetic justice when it fell off the forklift and the cone shattered into a million pieces. Too bad I had to buy a new one since I'd already sold the damn thing. I've been much happier with the 4 Oneida products we've had in the shop. Our current 15 HP is more than adequate for our entire shop. Jason 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: Clamp-Together pipe for dust collection
#dustcollection
开云体育Bird, The risk of going too big is drop in air speed required to carry chips. IIRC, 4000 ft/min is the goal for the main duct. So in designing the DC system one is trying to minimize the overall resistance so that adequate CFM is available at the machine while ensuring that the air speed does not drop below minimum requirement. Imran On Jan 18, 2021, at 10:32 PM, Bird Cupps <birdc@...> wrote:
? On the subject of dust collecting, I have quite a bit of 4’’ spiral pipe if anyone is interested. If I remember right, Archarya is in Hawaii, so that’s probably not going to work to get it to him. Is there any harm in sizing up ducts even if you don’t need it? I did some calculating and figured I needed a 6’’ line but I have 7’’ and 8’’ pipe on hand so figured I’d use that. I picked up a dust gorilla cyclone at an auction and it has an 8’’ entry, so I need to get to 8’’ at some point. Bird Cupps Mount Horeb, Wisconsin
|
|
Re: Clamp-Together pipe for dust collection
#dustcollection
开云体育I have a Clearview, not the max but the standard one with a 5 hp motor.? I used 6” sewer and drain pvc pipe for mine since the thinner wall give me 1 square inch more cross section area.? It will suck up a 16’ tape measure real nice!? I use manual blast gates from Clearview.? I am a hobbyist so it is not important to have an automatic system.? I do run as close to the machine as I can, then use 6” flex hose and a furnace pipe reducer to get to the 4” or 5” machine openings.? I found that by using the large hose clamps (bought from Menards in the plumbing department) with a wood spacer from the wall or ceiling I can drill a hole in the band clamp to fasten it to the spacer block with a dry wall screw and then tighten the band screw around the pvc.? It is reasonable priced and works well to support the pipe and go around the fittings too.? I attached a picture, but am not sure if it will post. ? Kim ? From: [email protected] <[email protected]> On Behalf Of KRPatel via groups.io
Sent: Monday, January 18, 2021 5:05 PM To: [email protected] Subject: Re: [FOG] Clamp-Together pipe for dust collection #dustcollection ? Hi Acharya, am also looking at finalizing the layout and specs for a DC system using Oneida with "sewer" pipes for the main feeds as thought perhaps the PVC pipes would be easier to work with and install so don't necessarily dismiss it for appearances sake ;).? Also, did you look at the Oneida personal and professional lineup of DC systems? |
Jason Holtz
imran
Jeff
David Luckensmeyer
