screen printing > DIY - From master engineered marvels to cobbled together jury-rigged or Jerry-built junk!
DIY exposure unit: any plans or advice appreciated
abchung:
--- Quote from: Wildcard on September 01, 2015, 08:02:04 AM ---I've done some looking into the metal halide grow lights and from what I can tell, these lamps require a few minutes to warm up to full output.
Do all MH units use a shutter for exposure rather than a basic on/off/timer switch? Not sure I'm keen on trying to build a DIY light shutter.
--- End quote ---
I bought my 1000W M.H (10,000 Kelvin) and ballast (i think it is called a ballast) from Sun Pulse in Sydney.
http://www.sunpulselamps.com/Home_Page.html
I chose 10,000 Kelvin because I think it gave me the proper wavelength.
http://www.personal.psu.edu/users/s/b/sbj4/aquarium/articles/MetalHalideLamps2_files/photo2_files/f2fig2.jpg
other kelvin vs wavelength can be seen from the following website.
http://www.personal.psu.edu/users/s/b/sbj4/aquarium/articles/MetalHalideLamps2.htm
As for shutter, I just use plywood that slides out and in. Nothing fancy.
Wildcard:
Thanks for that link, I'll give them a call to get some info and prices. Good lead.
IntegrityShirts:
What is the budget? There are a few DIY ways to go depending on how much you are willing to spend.
Itsa Little CrOoked:
Just a smidgen off topic, but I'd sure like to shoehorn a BIGGER "hammer" in my little NuArc.
I've modded the vacuum frame to accept 23x31's and it works like a champ. But I like slow emulsions due to the room I work screens in is also my print floor. IE, not light safe. I am tight on floorspace having added an auto.
Anybody have any ideas on how to fit a BIG Bulb in a 800 watt fixture and physical space? I run an NP80. 4th bulb down here: http://www.wslusa.com/id172.html
A bigger ballast is not an issue really. I can source that locally, I *think*, but the integrator probably wouldn't work the same. (I am too "tight" for my own good.) ;)
Wildcard:
Budget would be roughly up to half the cost of a new unit, because the only point of DIY in this particular case is to save money, too expensive and I may as well buy a proper unit. In Aussie $ I could get a decent desktop black light vacuum unit for AU$2500. So I'd say under $1000 would be a win.
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