If you’ve been glazing for any length of time, you may have heard about the importance of measuring the specific gravity of your glazes and you may have found yourself wondering: “If it’s so important to measure specific gravity, why aren’t specific gravity values published on glaze recipes?”
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.
Glaze Management 101. It’s a lot of work to run a school or community pottery studio. There are a lot of moving parts to look after. I’ve been a studio technician for 5 years now and it’s a very busy and rewarding job. As the technician, I’m taking care of all the behind the scenes…
When a recipe adds up to 100%, we can easily compare it to other recipes. This is particularly useful when we have additions like colourants and opacifiers. The base recipe remains constant while the additions are always relative to 100%. It also allows us to look at 2 recipes side by side and compare the amounts of individual materials. But what do we do if our recipe doesn’t add up to 100%?