How many coats do you have to put on to get proper coverage so your brush strokes do not show with lights inside the block?
At least two. After the second coat dries, hold the block up to the light. If necessary, apply a final coat.
Steps for painting on glass:
I'd use a primer then two coats of paint.
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What kind of paint do you use to paint on glass blocks?
Steph from Indianola, IA
If you etch or sand the surface, you can use any kind of paint. If not, I'd suggest glass paint. Even then, it will scratch off unless you seal it with numerous coats of clear sealer. I've found the most durable way is to etch the surface. Paint sticks better to a rough surface.
I would use "Glossies" by Liquitex, it's sold with the higher-end artists paints, not with the crafters paints at Michael's craft store. This stuff is made to paint on already glazed ceramics, glass, window, tiles & other surfaces like that. It's so strong that I painted a set of juice glasses for my son & after he ran them through his dishwasher for over a year, they still looked like brand new!
* A note: Glossies dry faster than other acrylic paints & they tend to darken a bit after they dry. Don't add to much water to them. Read the directions on the back of the bottle. Remove any mistakes with alcohol,
---> Be sure to first wash your hand to remove any lotion & naturals oils, then wipe down the area to be painted with rubbing alcohol & a soft cloth or paper towel.
I am painting glass blocks for Christmas gifts. I want to paint a picture and frost the block. Do I frost first and then paint? Or paint the picture and then frost over the whole block?I have seen where they frost over vinyl, but I am not sure about over a painted picture. Thanks.
Paint first, then frost. A store like Michael's will have the supplies you need.