Sending blades of 3V or M4 to the heat treater

[Tom Lewis]

Those of you who have experience with 3V or M4, how finished is the blade when you heat treat?
I make a lot of knives of CPM154. I completely finish grinding the blade, then hand sand with 400 grit and then send off to Bos heat treating. When I get the blades back I re- hand sand with 400 grit and go up to around 1200 grit. I don't go back to the grinder after heat treatment. When I send the blades off, they are finished except for the hand sanding.
Can you do that with 3V or M4?
Looking at Peters site it says air hardening steel should be no thinner than 0.015. That is close to how thin the edge on my CPM154 are when I send them to Bos heat treating.
So, will that work with 3V or M4? From my point of view the more I can do before heat treat while the steel is in the annealed state, the less I need to do once the steel is hardened.

 

[AVigil]

Yep, you can do the same with 3v and M4

 

[kuraki]

I've had both done by Bos the same way you do 154

 

[Tom Lewis]

Thanks for the information!

 

[One Armed]

I've sent Brad several different finish libels. Just a de-scaled, rough sanded flats to finished on my surface grinder flats, and no bevels to about 60-70% bevels. They have done fantastic with them all.

I typically do roughly 120grit surface and 50% bevels on blades above .125". Blades below .125" just get 120grit and I fully grind bevels POST heat treat. I don't mind the bit extra work so Brads guys don't have to worry about "fixing" warps.