Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic Another Case Hardening Question (Read 3091 times)
Cheapscate
Ex Member


Another Case Hardening Question
Feb 7th, 2006 at 9:44am
Print Post  
Is there any problem encountered in case hardening parts that were previously cased? Any special prep? What if the old case hardening is filed or polished through but only in some places?  I am working on a High Wall that was very badly rusted. On the lever, I have obviously polished through the hardened surface in places. My first thought was that this should not be a problem but I remember once when my first thought was wrong ( I know, hard to imagine  Grin).
  
Back to top
 
IP Logged
 
hst
Oldtimer
*****
Offline



Posts: 569
Joined: Jun 3rd, 2004
Re: Another Case Hardening Question
Reply #1 - Feb 7th, 2006 at 7:15pm
Print Post  
Mr. Skate:

No worries. You have not done any damage. You have, however, gone about it the hard way.

If the action and associated pieces parts need serious cosmetic work and are going to be re- casehardened, your fingers will thank you if you anneal the action before you polish. The soft steel is much easier to work with.

I generally draw the hardness the old fashioned way, the way the old buffalo hunters did. I take the action up to the kitchen and put it in the oven and run it through the oven's self cleaning cycle. It will come out looking a bit rough but quite soft, and you will find it a lot easier to work with. 

After polishing and rehardening it will be a good as new.

Best of luck,

Glenn
  
Back to top
 
IP Logged
 
ssdave
Frequent Elocutionist
*****
Online



Posts: 1987
Location: Eastern Oregon
Joined: Apr 16th, 2004
Re: Another Case Hardening Question
Reply #2 - Feb 7th, 2006 at 7:23pm
Print Post  
HST,

I do it the way the old indians did before the buffalo hunters came.  Take a 4" bread loaf pan, add an inch of clean silica sand, put in the action, and cover with an inch of silica sand. (New blasting grit is a good, clean source that doesn't smell).  Then put it in the oven and run it through the clean cycle.  The sand stops a lot of the oxidation and helps protect against potential warpage by heating slower and more even.

dave
  
Back to top
 
IP Logged
 
ken_hurst
Ex Member


Re: Another Case Hardening Question
Reply #3 - Feb 8th, 2006 at 7:32pm
Print Post  
SSDave,   I agree with an exception. I have found that by using chalk dust/whiting that there is far less air available to the frame & hold heat as well.   Classic Guns Inc. seals the parts in a metal container packed with charcoal dust --- heat to 1400 and allow container to set until charcoal has burnt out & all is cool. FWIW,   Ken
  
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint