I love data! In all of my years of teaching soda firing at Lillstreet Art Center and at Northern Clay Center, I always have students asking questions about what underglazes might work in the soda kiln. There is often a desire to get a touch of color that is best achieved with an underglaze. But hard to know where to start! And some of them can be pricey (hello reds!). So I did some crowdsourcing with my NCC classes to test the Amaco underglazes that we collectively owned. Most are the line of Amaco Velvet underglazes (that’s what the V is for). But there are a few other lines (DV and SS) that are discontinued. But jars are still floating around out there so we tested the ones we had. Some of the Designer Velvet underglazes are gorgeous! Firing underglazes in reduction, at cone 10 is not a typical use. So you can’t get the information you might be looking for out of the maker’s test tiles. These test tiles have been invaluable to my students. And I am hoping that this post, sharing them, will help many more!
blacks and grays
I am happy to be back to blogging! Thanks for reading and sharing!