Thermal treatment with foil. Question.

[Fernando Caridi]

Hello Friends, this is my first post in this forum, (I live in Argentina) and it is to ask you about hardening with foil.
The last times I did heat treatment was with k110 steel and foil. The point is that the foil ends up sticking to the knife, how can I avoid that unpleasant subject. ?
Thank you for sharing your experiences with me.

 

[Hubert S.]

Somebody (I forgot who) on the forum recommended baby powder. I've only used it on seven blades, but so far, so good. I bought the stuff made from talcum powder, the store brand version was mostly corn starch IIRC.

 

[Larrin]

I've never had foil stick before. How are you wrapping and heat treating?

 

[JTknives]

If blades are sticking bad then you’re using the wrong foil for the temp. There are generally 2 stainless foils that are used. 309 stainless is the high temp foil used for the upper end of the heat treating spectrum. That’s all we use here in my shop.