screen printing > DIY - From master engineered marvels to cobbled together jury-rigged or Jerry-built junk!

DIY Rotating Vacuum Exposure Frame

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Binkspot:
Bearing is exactly what I'm talking about. They will move effortlessly.

If it was me I would have a disc out of 3/8" plate about 12" dia welded on one of the shafts between the frame and bearing. I would make a friction with a heavy bolt, spring and block of nylon to control the speed of it like a brake. I would also drill two holes in it 90 degrees apart to put a spring pin in to lock it up and down. Hard to explain but I would also cut a slot the the disk to put a bolt or pin in as a positive stop if it was to get away from you.

If you have access to a fab shop and a little creativity the posiabilties are endless.

PhilR:
For the gasket I'd suggest looking into automotive door sealing gaskets. They come in a very wide variety of profiles.

starchild:
Hey mimosa are you aware of  t-slot extrusions? It's the aluminum exterior material that you see on M&R equipment.. You get a modern industrial look without the welding and cost is lower.. Hinges, latches, panels and everything else to construct your unit and achieve a modern industrial look with no special tools..


http://www.8020.net/T-Slot-1.asp

http://www.8020.net/Solution-1.asp


http://catalogs.8020.net/app.php?RelId=6.1.7.4

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jvanick:
8020 is great, easy to work with, and it's strong too...

check their ebay store at '8020 garage sale' ... they sell 'blem' extrusions there, which are normally a bent corner, or scratch here and there...

I built a 4'x4' CNC machine out of it a few years back, and it's still running as good today as the day I built it.
(even holds accuracy to .003")

-J

mimosatexas:
Wow, great concept, and I wasn't aware of it.  I actually have another project I'm working on where this would solve a few problems I've been struggling with (parallel lift large format one armed bandit with interchangeable tops for printing different substrates).

I'll compare a quote for their stuff with my local welder.  Thanks!

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