•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com

Sign-up at https://insight-live.com today.


Feldspars typically contain 5% or more free silica and thus pose similar hazards to quartz. They are employed in large percentages in almost all clay bodies and in most glazes. There are hundreds of different brand names, try to get a quartz content figure from your supplier.

Out Bound Links

In Bound Links

  • (Materials - Lung damage) Soda Feldspar - Na2O.Al2O3.6SiO2

    Na-Feldspar, Na Feldspar, Albite

  • (Materials - Lung damage) Calcium Feldspar - CaO.Al2O3.4SiO2 or CaAl2Si2O8

    Lime Spar, Lime Feldspar, Ca-Feldspar

  • (Materials) Feldspar
  • (Materials) Potash Feldspar - K2O.Al2O3.6SiO2

    K-Feldspar, Orthoclase, K Feldspar, Potassium Feldspar

  • (Materials - Lung damage) Spodumene - Li2O.Al2O3.4SiO2 or LiAl(Si2O6)
  • (Materials) Pegmatite
  • (Materials) Feldspath ICE 10

By Tony Hansen

Feedback, Suggestions

Your email address


Your Name


Copyright 2003, 2008, 2015 https://digitalfire.com, All Rights Reserved