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Updated on April 11, 2009
helder22
Participant
April 11, 2009 at 9:24 am
Q:

since Im gonna have to get new trigger internals anyway…..

Well, A while back I tuned my trigger and THEN I discovered that the trigger components are only case hardened., Sure enough, after a few hundred shots now the parts are starting to fail me.

Anyhow, since I’m gonna have to get a new sear and intermediate bar anyway, is there anyone offering an upgrade for these yet? Or should I just go ahead and order stock parts from AF ?

Helder

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Viewing 11 replies - 1 through 11 (of 11 total)

Anonymous
Inactive
April 13, 2009 at 4:45 am

😉

knifemaker
Participant
April 13, 2009 at 4:04 am

Not an idiot at all. Just not a metallurgist. Heck. Half the Knife Makers I know can’t seem to fugure it out! 😉

Mike

Anonymous
Inactive
April 12, 2009 at 4:38 am
quote knifemaker:

Well, if it is mild steel, which it probably is, this won’t work. Case hardening is used on mild steel, as it can’t take a full hardening. The carbon content is too low. In other words, AF is using cheap crap.
Full hardening steel likes to warp a bit when quenching, so they can save a lot of time and money by buying much cheaper steel that can be case hardened, which usually doesn’t warp. . Tool Steel that deep harden’s is a LOT more expensive. Which knowing AF the way we do, would explain why we are getting the cheaper materials and workmanship!!! 👿

Told you I was probably an idiot.

knifemaker
Participant
April 12, 2009 at 4:32 am

Well, if it is mild steel, which it probably is, this won’t work. Case hardening is used on mild steel, as it can’t take a full hardening. The carbon content is too low. In other words, AF is using cheap crap.
Full hardening steel likes to warp a bit when quenching, so they can save a lot of time and money by buying much cheaper steel that can be case hardened, which usually doesn’t warp. . Tool Steel that deep harden’s is a LOT more expensive. Which knowing AF the way we do, would explain why we are getting the cheaper materials and workmanship!!! 👿

yellow-ninja
Participant
April 11, 2009 at 8:25 pm
quote airtight_python:

I’m probably an idiot, but why couldn’t we harden the parts ourselves. Torch them to cherry red, dip them in vegie oil to cool and then put them in the oven at about 400 for a couple hours to anneal?

or quench in dirty engine oil

Anonymous
Inactive
April 11, 2009 at 8:24 pm

I’m probably an idiot, but why couldn’t we harden the parts ourselves. Torch them to cherry red, dip them in vegie oil to cool and then put them in the oven at about 400 for a couple hours to anneal?

yel01z06
Participant
April 11, 2009 at 2:10 pm

you could also try this

http://www.ehow.com/how_4623763_harden-mild-steel-salt-water.html?ref=fuel&utm_source=yahoo&utm_medium=ssp&utm_campaign=yssp_art

walkonking
Participant
April 11, 2009 at 1:59 pm

It is true that the trigger parts are only case hardened which means only the surface.
We have warned many times over the years not to polish or stone the parts but a whisper.

You can always re case harden the parts by buying from Brownells case hardening powder.

terryintn
Participant
April 11, 2009 at 1:47 pm

I think case hardened is just about .020 thick from the outside surface.

savagesam
Participant
April 11, 2009 at 1:44 pm

Ok Helder this is a perfect chance for me to learn something I did not know. What is it that happend? How/why did it happen? I’ll guess “Case hardened” means only the surface is hard?

walkonking
Participant
April 11, 2009 at 12:58 pm

Do some searching here. I believe Marc had some made from tool steel.

Viewing 11 replies - 1 through 11 (of 11 total)

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