Whenever I fuse glass together in my kiln, I put the pieces of glass on a kiln shelf. The shelf must be prepared with a separator, called kiln wash, so the glass doesn’t stick to the shelf when it melts. Sort of like flouring your pastry board before rolling out a pie crust. What you don’t make pie crust?! I don’t either anymore. Thank goodness for the Dough Boy. In any case, preparing the kiln shelf is not a fun thing to do.
I started out by using what all the books said. A putty knife to scrape clean the shelf, and a haik brush to brush on the kiln wash. And then I would brush on 8 coats of the kiln wash. Used to! Not anymore. Now I use a razor to scrape off the old kiln wash – way more effective than the putty knife. I use a green scouring pad to help with the last bits of kiln wash that stick on the shelf. I use a cheap chip brush to apply the kiln wash – it doesn’t loose as many hairs. Then I brush on four coats of kiln wash. If I’m being really conservative I’ll put on 6 coats. And I am way not as meticulous with this as I was when I first started out. When I brush on 6 coats I can for sure get two firings out of the shelf.
Anyone have any other kiln shelf prep tips they”d like to share?