On my youtube channel I get asked so many times, will my furnace melt steel? I always say no because I tried to melt ball bearing races a long time ago and the result was a blob of badly oxidized steel in the crucible. So this week I came across this video by PatJ making an attempt to melt steel in his fuel fired crucible furnace. It was no surprise to see it fail. PatJ is an expert in building high temperature furnaces so this means that it is impossible to melt steel in a backyard furnace.