Reddit reviews ITC-100HT Pint Ceramic Radiant Heat Reflection & Protective Refractory Coating
We found 1 Reddit comments about ITC-100HT Pint Ceramic Radiant Heat Reflection & Protective Refractory Coating. Here are the top ones, ranked by their Reddit score.
Fuel consumption in reheat, heat treat, and forging furnacesHeating, firing, and process timesRefractory erosion due to slags & fluxesExtends the life of refractory and insulationEnables home forges to reach welding temperatures
You can build a naturally aspirated propane burner like this for pretty cheap. "Naturally aspirated" means the burner pulls in all the air it needs by itself, so you don't need a blower or anything. You won't be able to melt iron with one of these, but it's all you need for aluminum and copper alloys
Next you'll need a body for the furnace. A lot of guys use old rusted-out 20lb propane cylinders. If you do this, you need to take the valve off the top and fill the cylinder with water before you start cutting it up, otherwise you risk having the little bit of residual gas inside blow up and kill you dead. Don't fuck around with this
Now you'll need something to insulate your furnace. You'll see a lot of recipes for homebrew refractories which you should ignore. None of them work as well as kaowool. Line your furnace with 2" of this stuff, and then coat the interior with some ITC-100 or similar. Don't skip that step. You need to have the kaowool coated because it's similar to asbestos and it's extremely bad to breathe the little particles that break off during operation