Quote Originally Posted by Madbricky View Post
...use Water Glass (Sodium Silicate) and food grade charcoal to make my coatings and pipe mud. The Germans invented it a century ago to line pipes negating break in and find it takes care of cobs that want to burn out. Dries very hard, odorless and safe.
What is water glass and where do you get small amounts? Can you describe the mixture method and the consistency of the glass mud when it's applied? How long should it rest on the pipe before smoking?