any of you clay gurus....
what, or why is one clay more translucent than others?
is it the type of porcelain in the clay body? is epk, grolleg, tile 6, helmer more translucent than another?
if so whats your guess?
The short answer is the purity of the kaolin, all the clay bodies discussed in this topic are using a very pure New Zealand kaolin (technically a halloysite), that explains the NZ in NZ6.
Yeah, I figured the NZ was for New Zealand. I've got a bag of New Zealand Kaolin (supposedly the purest kaolin in the world) and sometimes sub it in a test batch of glaze for EPK and other kaolins. There has to be a lot of kaolin in the recipe to make a difference. I've got to get around to trying NZ6. It may replace my Frost.
I thought you might be interested to know - I just finally got a batch of frost tumblers out of the kiln yesterday, and without a doubt, the NZ6 is more translucent. I compared the entire batch, but specifically I picked a frost one that was particularly thin and light, and a NZ6 one that was slightly thicker, and still the NZ6 one had more translucence. I was pretty disappointed in the frost tumblers after working for months with the NZ6 (not to mention that my clear glaze crawled on EVERY SINGLE ONE). Looks like I'll be driving to Tacoma for my clay afterall!