How To Coat A Screen Printing Screen With Photo Emulsion

[shyflirt1]

The exposure time varies by the type of light you use, the wattage of the light, and the distance of the light from the screen. If the light is half as bright, you will need to roughly double the exposure time. If the light is twice is bright, the exposure time is halved. If you moved the light closer to the screen, the time is descreased, etc. Personally I use a 250w halogen light, about 20 inches from the screen, and expose for about 40-50 minutes.

[trebluap]

may i know how much time do expose that kind of emulsion (diazo speedball)? using a fog lamp, under the sun, exposure unit, etc..? thanks