Thread: Case Hardening Paste - Metal Working

I bought some of this years ago when I was building a Stuart-Turner model steam engine.

Cherry Red Case Hardening Powder
– E and J Winter - Bolton Scale Models

Originally Posted by p38arover

I bought some of this years ago when I was building a Stuart-Turner model steam engine.

Cherry Red Case Hardening Powder
– E and J Winter - Bolton Scale Models

Hello Ron,

Thank you for the link to the product. I just placed an order with them.

Kind regards
Lionel

I used that stuff to case harden a mild steel shaft many years ago, not worth the trouble. Have you tried heating and oil-quenching the existing tool? It may be made from a steel that will harden by simple means. If not, with such a simple form, you would probably be better off to reproduce it in a more suitable material as you say.

In engineering at tech school we used the oil quenching method for a few of the tools we made, also case hardened the body of a socket wrench we made.

Also good for splitting spot welds.. once you drill 'em.

Originally Posted by POD

I used that stuff to case harden a mild steel shaft many years ago, not worth the trouble. Have you tried heating and oil-quenching the existing tool? It may be made from a steel that will harden by simple means. If not, with such a simple form, you would probably be better off to reproduce it in a more suitable material as you say.

Used this method as well.
Milder steels seem easier to get a satisfactory result from, ie 1045 vs 4140.

Lot of old machinists swear very well used engine oil is the go over fresh stuff.... carbon content maybe?

Cyanide salts BE CAREFUL!!
Terry