screen printing > DIY - From master engineered marvels to cobbled together jury-rigged or Jerry-built junk!
DIY exposure unit: any plans or advice appreciated
Wildcard:
Yeah I'm not even going to bother with looking into freight to Aus :)
Wildcard:
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.
Frog:
--- 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 ---
Kinda' the nature of the beast
Just another area that LED's appear to offer an advantage.
mimosatexas:
My diy shutter is a piece of sheet metal i move to start exposure. I am also using a grow bulb. Basically, I have lots of airflow across the light and the glass, and manually remove and replace the shutter. It doesn't get hot and neither does the glass. You can make the shutter hinged or have it slide back and force or just lift it off and set it to the side. You don't need anything fancy and automated.
Frog:
--- Quote from: mimosatexas on September 01, 2015, 10:06:44 AM ---My diy shutter is a piece of sheet metal i move to start exposure. I am also using a grow bulb. Basically, I have lots of airflow across the light and the glass, and manually remove and replace the shutter. It doesn't get hot and neither does the glass. You can make the shutter hinged or have it slide back and force or just lift it off and set it to the side. You don't need anything fancy and automated.
--- End quote ---
Although, a little ingenuity along with a solenoid and a spring can come up with at least an automated way to close it fairly easily.
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