screen printing > DIY - From master engineered marvels to cobbled together jury-rigged or Jerry-built junk!
DIY exposure unit: any plans or advice appreciated
lrsbranding:
Getting bulbs with the right light spectrum is very important. Don't grab something off the store shelf and hope it works. Don't forget a single light source unit will be a lot deeper than a fluorescent unit so if your cramped on height it may not fit. Here are pic's of my evolved compression lid fluorescent exposure unit. Made a box to accommodate the larger glass. The neoprene sits between the lid frame and glass then wraps up the outside of frame so getting a good seal is no problem. Used a motorcycle valve stem through the neoprene with the valve removed. Got an a/c evac. pump from Harbor Freight. The light source is a LED insert conversion from Vastex. Most important tip I found is after deciding how big of screen you want to make, be sure your glass and vacuum top is large enough to sit down around the screen frame and make contact by itself. Also the tightness of the neoprene will affect this. Other wise you will be standing there squeezing the frame to the glass to start the vacuum.
andyandtobie:
Nice! Would it be rude if I asked what the Vastex conversion piece cost? We need to upgrade our exposure unit on a tight budget, so we're going to be building something soon.
Wildcard:
Homer, thank you for the offer. I'm located on the Gold Coast, Australia, so it probably means that the shipping would end up a big hurdle (not sure where you are located or how well the unit will pack down onto a pallet).
@jvanick & @irsbranding, thanks for the additional advice and pics. Much appreciated.
Homer:
no Problem - mate!-
offer is open to anyone else looking to build a unit.
andyandtobie:
Wow, if I could afford the freight, I'd be all over that. Unfortunately, I'm in northern Idaho, on the other side of the country. Argh.
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