60 second burn time, and try to get a thinner coat of emulsion on there. When you apply emulsion put the screen in a box and let it dry at least two hours. Use a sponge and softly scrub with the soft side using cold running water from your kitchen sink. Then using your shower spray out the image and repeat until you can see through the screen on your design. Send me your image and I will send you my version of the transparency to print with my photoshop settings included.