I'm with Ed just buy a electric Kiln. I was going to buy 1. But then after researching I new it would take way to much time and I would rather make Knives then build an oven. I found my oven used. An evenheat 28" for $500 and it had new coils in it.
Another Harpoon clip Bowie I have been working on. Its W2 tool steel. This has Hamon. It is a clayless Hamon meaning I didn't use any Clay. It has been a lot of work.
Dan It doesn't make the paper stay stuck? It always did that to me but I'm not sure if I was using the same spray as you. All I know is it was spray adhesive and it would make the paper stick so bad I would have to scrap it off with a razor.