For those that's seen my gas forge, one of the things I did for the design was to make it easy to rebuild. Welding cable is messy and the borax will eat up everything it touches. Today I had to do a rebuild. I obtained some soft firebricks to replace the top bricks that were hard.
So I took it apart and this was just one of the hard bricks. Think these forges don't get hot?
After firing it up after the rebuild I notices something. It was hotter. Not only that but the soft bricks weren't glowing like the hard bricks did. It also didn't take as long to heat up. Just thought I'd share this experience.
Rule #10; "I can make that" translates to; "I'm to cheap to buy it new."