…And what to use if you don’t have one. I use a graduated cylinder for measuring specific gravity. A slender container is going to have smaller increments than a wide container, giving higher accuracy.
In this video I demonstrate how to measure the specific gravity of a glaze I just mixed using a graduated cylinder and a scale.
If you have too much clay in a glaze recipe, you might have issues with your glaze crawling during the firing. Crawling is where the glaze pulls away from the clay body due to a combination of shrinkage, poor adhesion and high surface tension.
Glazy.org is a website where users can upload their ceramic recipes with images, to share with the ceramics community. Anyone can create an account for free. You can search for recipes based on colour, texture, temperature and more. Click for more info.
Are you ready to start mixing your own glazes? Perhaps you’ve reached the point in your ceramics journey that you want to start understanding the materials you’re working with and what is actually happening when you put your pottery into the kiln.