Length of time to reach kiln temp

[Maineiac1]

Probably the best thing to do is to make some coupons and test them at different temperatures. I'd suggest making the coupons big enough that you can break them to see how the grain growth is. This showed me that my DIY oven was way too hot. I don't have a hardness tester so I just file tested everything. I saved the coupons though to have them test at a machine shop. This should really be done with any oven to make sure you're getting the best heat treat possible.

In reality, you just want a good heat treat so this will let you find the recipe that works best for your oven.

Great point I will do that, thanks!