Screen Printing on Glass

by Sue Poarch

(Using the  Barry Kaiser Technique)


Screen Printing on Glass using the Kaiser Pro-Screen


Kaiser web site is www.kaiserglass.com

    From there you can order the Pro-Screen sheets and glass paints.


Other necessary items:

  1. Patterns on acetate (aka overheads) printed as dark as possible.

  2. Glass

  3. “sandwich” 

    1. o3 in x 3 in square clear, colorless glass.

    2. oSame size square of black glass.

    3. oSame size square of black construction paper or black felt.

  4. Black light

  5. Water in container .

  6. Water in good spray bottle

  7. Hair dryer.

  8. Something with which to apply the paint

    1. oBrush

    2. oartists spatula 

    3. osmall rubber scrapper

    4. oyou can even use a plastic card or wood from a pop-cycle.

  9. Heat gun


Process—Making the screen

1  Turn on black light.

2. In darkened room, remove and discard the protective cloudy plastic cover from the unexposed screen. Note that this is the matte plastic on the screen. Use craft knife to poke screen side to remove from the plastic. Work quickly as the screen is exposed by light.

3  Make a bigger sandwich out of the black glass and paper/felt from the sandwich”, the unexposed screen (slick-emulsion side up), the negative (also shiny side up), and the smooth clear piece of “glass sandwich” on top.

4  Put the sandwich under the UV lamp (approximately 2 inches from the bulb) clear glass on top.

5   Expose (approximately 1 minutes for my setup). Time is based on bulb
strength and distance.

6  Turn off the bulb, remove the screen from the sandwich, turn the light back on, and place the screen with slick-side up in lukewarm water.

7  Let screen stay in water for two minutes and thirty seconds (time not critical).

8  Spray screen from about 6- 12 inches with hand sprayer. Spray must be directed perpendicular
to the screen.....not at any angle. If the pattern doesn’t appear within 20 seconds, place the screen back into the bath for about another 15-30 seconds and try again. 

9  Inspect the screen carefully for any area that may not be washed away. The best way is to hold it up to a light and go over all the areas of the screen looking for places that the light does not go through. Repeat spray if necessary. DO NOT OVER-SPRAY. Once the screen is washed out stop!

10  Dry with hairdryer.

11  Place the screen under the UV lamp again and expose for at least 10 minutes to harden the emulsion.


Applying the screen to the glass

  1. 1.Masking tape method – only use this when absolutely necessary.  Will discuss.

  2. 2.Light water technique.

    1. a.Hold the glass to be painted at arm’s length and spritz it lightly with water.  Place screen onto spritzed glass and press tightly to remove air bubbles.


Applying the paint

  1. 1.Stir paint if needed – usually this is necessary.

  2. 2.Put dab of paint on screen near the pattern and scrape it across the pattern with a spatula or little squeegee or palette knife. 

  3. 3.Remove as much paint as possible and return the excess to the paint jar.

  4. 4.Carefully remove the screen, pulling up from one side.

  5. 5.Dry the painted glass with a heat gun. 

  6. 6.At this point you can use a toothpick, exacto knife or such to remove any excess dry paint.

Clean the screen by running water over it until clean. 

If you can’t get the screen off the glass, soak both in water until the screen turns loose.  Dry the screen with a hair dryer and try again.


Firing the paint onto the glass:

    Kaiser paints mature at 1400 after 10 minutes. 

Notes:

    www.kaiserglass.com to order materials.

When firing orange or red paint, vent the kiln until you reach 1000 degrees to obtain a good vibrant color. 

With the exception of the red and orange paints, you can mix the paints to obtain other colors. 

Once fired, you can clear cap a piece with another painted piece to obtain depth.



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