Also the more inefficient they become (longer and longer times to get to temp). The more they fire the more brittle they become. The main danger would be to the elements. We have some around here and someday I'm going to experiment and see if they do conduct electricity. You might get away without it but what if your kid, friend, cousin decides to try it without you knowing? If you use a shelf you can also buy graphite ones which are rumoured to conduct electricity. Some kinda interlock/routine so that the power has to be off before opening would be a really good idea. There is danger if the power is still on (think toaster/knife senerio only much worse). I am not sure why but shipping bricks can also be a problem because they break rather easily.īest (and most expensive) is to buy a professionally made heat treating furnace. Unfortunately buying the bricks can be expensive. Lots of resources on the interwebs on how to do that. As they get bigger they get a lot more expensive ($K+.) Most lab type muffle furnaces (which is what I have) are pretty small and will not handle very large parts. Otherwise rig up some sort of basket for your workpieces and a long handle with a hook on the end. You will need some major protective gear like arm-length gauntlets and hood. Most potters (ceramicists?) never open the kiln until it has reached room temp. The downside is that most are top loading and you will be subjected to a big hot blast of heat when opening it up and fishing out your parts for the quench. I think that pottery kilns (eBay) are probably the cheapest way to go for the size you want.
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March 2023
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