Glass Cleaning Basics

Overview

Cleaning glass before firing it removes problem-causing contaminants like glass-cutting fluid, oils, minerals, salts, dusts, fibers, sticker residues, fingerprints and pen marks. If these substances are not washed from glass before it is fired, they may be visible in the finished glass or may cause devitrification—the growth of crystalline structures on the glass.

Glass Cleaning PDF
Revised December 26, 2007.