I get bored pretty easily so in an effort to combat the dropping temps i fabbed up this beauty View attachment 25925
It works really well, had to back off the psi as it got so hot it warped the firebrick pad that was rated at 2400* All the chisels, drifts, center punches are now straight & hardened
A guy that I competed against in the WERock west series had his axle housings tempered & hardened, he beat them off of everything and not a scratch on them. Heat Treating a Spider 9 Housing hopefully the link works