On 27 Feb 2006 17:02:19 GMT, Dave Hinz wrote:

Anyone have a good link to instructions for home case-hardening?

Find some _old_stock_ Kasenit. Follow the instructions.

Or else send it out to a commercial heat-treat shop who have liquid
baths and the fume extraction to make use of them.

Nothing in the middle seems to work very well. It's not a question of
technique, it's a question of materials - and the new stuff just isn't
what old Kasenit used to be.