Відео

Dump the nice music, turn up the voice audio!

I use mineral oil for chromoly chisels.

Looks like pretty cool. And if you guys wanna get more information about 4340 steel and 4140 steel, the links as below 4140 steel:steelpurchase.com/4140-scm440-17225-steel/ 4340 steel:steelpurchase.com/4340-sncm439-16563-steel/

any idea what the hardness rating was after the quench? could you skate a file across it?

lol,

I use vegetable oil with 1095 and O1. Would vegetable oil work with 4140? Do you need to temper after hardening?

Motor oil can contain metal contaminates.

I recently started hammering a cleaver from a spindle steel. I just wonder how to heat treat it to make it good enough for a present for someone.