mold hardener

Also called mold rigidizer.

When applied to refractory fiber products (such as fiber blanket), dried and fired, mold hardener allows the glass fuser to create reusable molds.

Colloidal silica is commonly used as a mold hardener.

fiber blanket molds

I am considering using fiber blanket to make molds.... how long do they last? as long as a clay mold???

I have only used low fire clay but this particular project isn't easy to do in clay.  Any ideas???

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.