or Join Now!
Hardening and tempering a plane blade.
-- Andy Halewoodworker. You can't finish if you don't finish. So finish it, because finish is everything.
home | projects | blog
515 posts in 2216 days
Heres what we have been up to lately
By subscribing to the RSS feed you will be notified when new entries are posted on this blog.
507 posts in 2177 days
#1 posted 03-29-2012 11:13 AM
Interesting, I had read that tempering in an oven was a good way to do it too. Seems like it might be a little easier than doing it by eye with the torch. Was the second dunk just to cool the metal quickly so it didn’t lose its hardness? None of the articles I’ve read called for a second quench, and since the metal wasn’t red hot I doubt it was to add any carbon.
-- The difference between being defeated and admitting defeat is what makes all the difference in the world - Upton Sinclair, "The Jungle"
1191 posts in 1482 days
#2 posted 03-29-2012 05:37 PM
That’s great. What concoction do you use the dip it in the first time?
-- I never finish anyth
#3 posted 03-29-2012 11:25 PM
The first dunk is in oil. The oil needs a low flash point or poof, youv’e got too much of the hot stuff.We were putting them in the water at the end only to handle them. Not wise as if too much heat left in the steel can make the steel brittle.So be patient and for best results let the oil cool the steel.
6249 posts in 1785 days
#4 posted 03-30-2012 03:22 PM
Other than steel color, do you have a way to measure hardness?
-- Cau Haus Designs, Thomas J. Tieffenbacher
#5 posted 03-31-2012 09:56 AM
No Tom. Sorry but I am as green to this as my students. If the straw colour or color as you guys spell it, is achieved in an oven it is a lot easier to control.
#6 posted 03-31-2012 02:26 PM
As much of a tech guy as you are. i thought there might be a tool? :) Did something similar in high school. We also use to add carbon powder? It was a school for technology and college prep, but it was a long time ago? LOL!
Guess the best way of knowing if it’s hard enough is keeping an edge?
#7 posted 03-31-2012 02:27 PM
Then again the torch you are using is pretty high tech.
Go to Pulse page »
©2015 Verticalscope Inc. All Rights Reserved. |
Terms of Service
DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.
Latest Projects |
Latest Blog Entries |
Latest Forum Topics