Steps to Screen Printing
We've covered the materials needed, how to make the screen, and the exposure lamp. We've also covered the images to print. Now it's time for the fun stuff. The actual screen printing.
1. Degrease the screen: Using regular unscented dish washing liquid (absolutely no orange, lemon, or whatever fruit scented soap) or Simple Green, wash any dust or oils from the screen and let it dry. The dish washing liquid needs to be unscented because the oils that make the soap scented are similar to the oils you're trying to get rid of in the first place.

3. Draw or print your design onto a sheet of transparency paper. The design has to be opaque-absolutely no light can shine through the black ink. If you have to, print out two transparencies and place them on top of each other.
4. Now, you are ready to expose. Turn on your handy dandy exposure lamp. Place black foam (or cardboard painted black) underneath your screen.

2. Tape off the edges of the screen. This will make cleaning much easier and save not only your ink but emulsion as well, which we'll be using to coat the screen. Following the directions on the emulsion container, spread your prepared emulsion in an even coat on both sides of the screen using the scoop coater/emulsion trough. If you don't have one, simply use the squeegee, holding it at a 45 degree angle-clean it afterwards.
Depending on your emulsion's instructions, coat the screen in a dark place where no natural light can go through. You can use a simple bug light to help you see what you're doing. Take some push pins and tack them onto the wooden corners of the screen, this will allow the emulsion to dry without coming into contact with the floor. Finally, let the screen dry in the dark in a horizontal position. You can take off the pins when done.


4. Now, you are ready to expose. Turn on your handy dandy exposure lamp. Place black foam (or cardboard painted black) underneath your screen.
Position your transparency wherever you want it on the screen and place a piece of glass (taken from a picture frame or found in Home Depot) over it, this will weigh down the transparency so it doesn't move anywhere. Because the heat could crack the glass, keep a small fan turned on nearby.
Burn the screen for at least 18 to 20 minutes. It could be more or less depending on how far the bulb is from the screen-usually, the closer it is, the less time it should take to expose.
When finished, run your screen under the shower with lukewarm water. The emulsion will wash away, leaving your design fully visible. Like step #2, tack four push pins onto the screen to allow it to dry throughly.
5. Lay your t-shirt flat on a table. If needed, you can use spray adhesive to keep it from moving. Remember to place a few sheets of newspaper or a piece of cardboard on the inside of the shirt to keep ink from going through to the other side.
To Be Continued...
Subscribe to:
Post Comments (Atom)
0 comments:
Post a Comment