Since i m using a 10 x14 screen and 150w bulb i exposed my screen for 45 minutes.
Uv light bulb screen printing burn.
Once the exposure is finished remove the acrylic and transparencies then go rinse your screen.
In a light safe environment center bulb directly above the middle of the screen at a height of 12 15 inches.
Screen exposure problems can be one of the most frustrating issues in the screen printing process.
I use emulsion from anthem screen printing inkjet transparencies and a homemade exposure unit.
This is how i burn my screen printing screens at home.
Source a light fixture to power bulb.
Turn on the light expose for the correct amount of time then turn off the light.
These videos cover most of the common issues with screen exposure.
To expose a screen.
If you are having problems exposing your screen or with your image washing out we highly recommend watching these videos that help trouble shoot screen e.