Mica Paint and Spray Medium

mica bowlColorful mica powders are available from most fused glass suppliers and many of the stamping micas available at craft stores (like Michael's in the US) will work on glass and hold their color even at fusing temperatures.

The best way to apply micas is to mix them in a liquid medium.  This very simple mixture works great.


  • mica powder
  • Bullseye Glastac or other clean burning glass glue
  • rubbing alchohol


  • All ratios below are by volume (not weight).
  • The exact proportions for the ingredients will vary depending on how you intend to use the mixed mica. Fortunately, precision isn't necessary here.
  • For spraying with an airbrush or mouth atomizer use 1 parts mica, 1 part Glastac, and 3 parts alchohol.  If you find your airbrush clogs frequently try thinning with additional alchohol.
  • For painting with a brush use 2 parts mica, 1 part Glastac, and 1 part alchohol.
  • For best mixing, close container and shake vigorously.


  • Use  this mixture as you would any other paint.
  • Mica will settle quickly.  Mix frequently.
  • Fire to fire-polishing temperature with little or no hold.  In most kilns this is about 1325° F.
  • Mica does not melt - only the mica touching the glass will "stick" after fusing.  After the glass has been fired a cooled you will be able to rinse much of the mica down the drain -- that is normal.


Does it work better if the

Does it work better if the mica is capped? Love love love these tips!!!


applying Mica powder

I recently experimented with mixing Pearl Ex (gold) with non-aerosol hairspray for a project to see if it would work...and it did! I put the mixture in a small cosmetic sprayer bottle from the dollar store and kept swishing it around while I worked. I sprayed it on a piece and full fused the piece. It stayed on nicely...and it looks great!

Thanks for this *great* site!

Abbis Gran I have loads of

Abbis Gran

I have loads of different mica powders, used for stamping. Does it work best with the mica inside the glass or on top?




Although I haven't tried this yet. I am going to guess that if you clear cap it, you need to make sure it's glass on glass on the edges. I'll bet the mica will seep out the edges if you don't.

Thanks for the tips. I can't wait to give it a go.



Did you use roughly a 50/50 ratio?



I recently made a bowl that used five different mica powders over the entire surface, then capped with another piece of glass and fired. I wanted the edges to be irregular, so as it fused, the mica at the edges did seep out a little bit and the edges rolled a tad. It created the more organic effect that I had envisioned.

Mica/hair spray ratio

Thanks very much, heartandsoulstudios, for that tip! Would you mind sharing your ratio of mica to hair spray you used in your experiment?

Thank you,


Teresafahey comment

Teresa- Look at the dates on the posts. The person you want to respond posted in 2009.


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