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What to do if your glaze recipe doesn’t add up to 100%
Take a simple recipe:
40 Feldspar
30 Silica
20 Whiting
10 EPK
_____________
100 %
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 equal 100%?
We can’t compare materials because the proportions aren’t equal. But we can fix it. It’s easy to convert any recipe to 100%. This process is called “normalization”.
To normalize a recipe:
- Take each amount
- Divide by the sum of the formula
- Multiply by 100
It’s that easy
You can do this with any formula, regardless of what it adds up to. Just 3 easy steps and your recipes are ready to be shared, compared, adapted and adjusted.
Hi Sue!
I recently had the opportunity to meet Ryan Rahkshan as he was teaching a workshop at the studio that I work for. I was unable to take his workshop because I was the assistant on duty, but he mentioned that you have great courses online.
Specifically, I’m interested in learning how to substitute one glaze ingredient with another and figuring out the percentage adjustments that would need to be made. Do any of your courses cover that?
Thanks,
Betty
678-270-8870
Hi Betty, my course The Art of Glaze Chemistry covers all of that and much more! Registration opens on Sep 21. Hope you can join!