05-09-2019, 01:42 PM
And it's not all good. I found a pump on c/l 4 years ago, and now I'm getting around to doing something with it. It came off of a piece of X ray equipment, max vacuum is about 22 in Hg. I added the manifold, gauge, hoses and fittings. Not as good as an A/C pump, but should suffice. Yeah, I know.
I have so far made 2 chucks and 2 adapters , and only 1 will pull a vacuum. I suspect the bearings. I thought these would work, maybe they will.
https://www.amazon.com/R6-2RS-Sealed-Bea...ay&sr=8-33
This is the foam.
https://www.amazon.com/gp/product/B07FPF...UTF8&psc=1
The flat disc with the black foam is the only 1 that works. I turned it on, placed a 3 lb. coffee can on it, got the 22 in Hg, and could not pull it off. Not even close.
The deep chuck would only pull 2 in Hg at first, I wrapped it with painters tape and got it down to 6 in Hg. I took off the tape and painted it with TB3, still 6 in Hg. I can only partly blame the bearing here.
I have some corian epoxied together, will try it soon.I used 2 part epoxy to attach a bearing to either lamp rod or a brass fitting. I thought I had a pretty good seal. I'm going to try to come up with a way to pressure test with compressed air.
I gave up on making just an adapter, and ordered 1 from Robust. They have to modify it to fit. I got a 10 year old Sweet 16 that's still as sweet as the day I brought it home 10 years ago. I'm going to just make few chucks.
I'd like to hear your success stories, and your fails. I might try MDF as a chuck body.
I have so far made 2 chucks and 2 adapters , and only 1 will pull a vacuum. I suspect the bearings. I thought these would work, maybe they will.
https://www.amazon.com/R6-2RS-Sealed-Bea...ay&sr=8-33
This is the foam.
https://www.amazon.com/gp/product/B07FPF...UTF8&psc=1
The flat disc with the black foam is the only 1 that works. I turned it on, placed a 3 lb. coffee can on it, got the 22 in Hg, and could not pull it off. Not even close.
The deep chuck would only pull 2 in Hg at first, I wrapped it with painters tape and got it down to 6 in Hg. I took off the tape and painted it with TB3, still 6 in Hg. I can only partly blame the bearing here.
I have some corian epoxied together, will try it soon.I used 2 part epoxy to attach a bearing to either lamp rod or a brass fitting. I thought I had a pretty good seal. I'm going to try to come up with a way to pressure test with compressed air.
I gave up on making just an adapter, and ordered 1 from Robust. They have to modify it to fit. I got a 10 year old Sweet 16 that's still as sweet as the day I brought it home 10 years ago. I'm going to just make few chucks.
I'd like to hear your success stories, and your fails. I might try MDF as a chuck body.
Got mine from Hartvill tool, with woodnet discount and free shipping
