If you enjoy the forum please consider supporting it by signing up for a NES Membership The benefits pay for the membership many times over.
I would assume that this is for a receiver bent up from a flat ............ if that is the case you don't want to harden it but rather stress relieve it.
hi what i got is a 80% annealed receiver but thought that i still had to heat treat it
You still need to harden the areas I mentioned above.
The easiest way to do spot hardening is with a product called Kasenit. Unfortunately OSHA had it pulled from the market.
There is a product called cherry red that is supposed to work as well as kasenit but without the nasty fumes. I have never tried it as I still have half a can of kasenit left.
If you want to go fancy: http://www.countyheattreat.com/
Yeah. It's bullshit.Be aware, a heat treat business will require an FFL to work on your receiver.
Jack
Be aware, a heat treat business will require an FFL to work on your receiver.
Jack
Only if it's 100%
Well ya. An 80% is only machine parts
interesting thread, got some ideas knocking in my head about parts kits again…gonna have to look for that kasenit stuff as id prefer to do one from an 80%. just thinking that i've got a local hardware store closing after years. maybe they'll have some. if not gonna maybe cherry red or try the way ben mentioned with mapp gas, water and then tempering.
edit with afterthought. what happens if someone doesn't harden them, the receiver begins to tear in these places?
Which?
who does metal hardening in western mass or close by thanks wayne
i annealed it in the oven under instructions from a crazy russian.
the receiver is now a functional rifle so it must work.
edit with afterthought. what happens if someone doesn't harden them, the receiver begins to tear in these places?
The ejector will mushroom and hang up on the bolt and the axis pin holes will wallow out.
Annealing is the exact opposite of hardening
Annealing is using heat in a way to make a metal more ductile or soft.
Both are considered to be types of heat treating. How high the metal is heated, how quickly its cooled and characteristics of a specific metal/alloy determine whether the heating and cooling cycle hardens or softens the metal.
Don