Okay, so back in high school I did screenprinting all the time, and never had any problems with it.
Last summer I tried to make a screen to use for a music festival we were having, and every time I exposed it, all the emulsion washed out, leaving me with a blank screen again. I tried every day for a week, changing exposure times, and eventually ran out of time, decided I was cursed, and gave up.
So this year we're having another music festival, and I'm again attempting to make another screen. The first one I tried, the light source actually fell onto the screen, melting through the transparancy, and burning a hole in the screen. So I sighed, took the screen off, and started over from step one. I re-stretched the screen, applied the emulsion, and burned the image. As I washed it off, I was excited for a minute, because an image was actually appearing! However, a minute later, it was gone, all the emulsion was washed out.
I am using speedball diazo emulsion and a 150 watt light bulb (which I am guessing might be the problem, even thought the speedball instructions say to use it?). I am following all the speedball instructions exactly. I've decided for the future, that perhaps speedball is not my top choice, but until I use up this huge bottle of emulsion, I'm stuck with it.
So help? I need to do this ASAP, and don't have the time or money really to buy more equipment, or experiment for days with exposure times. Any hints on how I can do this with what I have? Thanks....