By skyforbes 
This is a glaze that is actually glossy and clear, and can be mixed from scratch in bulk for pennies. It can be surprisingly hard to mix a clear glaze that is as good as the much-more expensive commercial options, and this is the best recipe I have found. It doesn’t develop bubbles or a milky quality when applied correctly (not too thick!) and for the most part, doesn’t develop crazing except when applied thickly over white clays as shown above.
This glaze works great over underglazes and slips, and can be double-dipped and layered with other glazes. It also works with oxide washes. And not only does it work, it’s cheap. When materials are ordered in bulk, this glaze costs about $10 for 3,000 grams, or enough to make approximately 1.5 gallons of glaze. Similar commercial glazes, such as the Penguin Pottery Mid-Fire Clear cost as much as $65 for a gallon. All in all, this is a simple, effective glossy clear and could also be a great base glaze to build your own studio palette.
One issue with this glaze is that it has 24% Gerstley Borate. By around Spring 2023, Gerstley Borate was no longer available. If you still have some, then great, this glaze will work for you. You can also substitute Gillespie Borate, but in my experience, that doesn’t always give the desired results.
In the studio, I am currently testing a few other glossy clear recipes and will update this post if I find one that works as well as this glaze.