How clean before tempering in oven ?

A

Angus McGunnigl

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May 22, 2002
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After the quench, how clean should I get the blade before the tempering oven ?

Should it be sanded down again to shiny ? I polished with 600 grit before heating and quenching.

I have read that cleaning and re-polishing is the way, and also reqad that just cleaning and drying well is OK.

Won't the crap on there after the quench kinda of bake on there ans be a mess to get off ??
 
Last edited:
Angus McGunnigl said:
After the quench, how clean should I get the blade before the tempering oven ?

Should it be sanded down again to shiny ? I polished with 600 grit before heating and quenching.

I have read that cleaning and re-polishing is the way, and also reqad that just cleaning and drying well is OK.

Won't the crap on there after the quench kinda of bake on there ans be a mess to get off ??
Click to expand...


Not to mention that smell inside of the home will be MUCH easier on you than whipping the wife or significant other will give you for NOT cleaning...

Charlie
 
I just wipe them down and temper, I like to get them in the oven before they cool below 125 degrees, and a quenched blade is very brittle, so the sooner it is tempered the less chance of breaking it from some side pressure of sanding, you can break a fully hardened blade by hand very easily, before tempering, ask me how I know.
Dale
 
To me, my favorite part of using a formulated quench oil is the blades come out clean, and the oil doesn't stink up the place. You might look into the mcmaster car 11 second quench oil. It isn't any more expensive than "alternative oils" and it eliminates burnt on crud headaches.


my .02
 
thanks guys.

My quench now is 1 part olive oil, 1 part used motoy oil, 1 part new ATF, 1 part new motor oil.

It do smell funny, but this whole endeavor is taking place in my shop which is about 50 feet from the house.

This sure am fun.
 
I agree with Nathan.I use 11 second McMaster Carr oil on my carbon blades and just wipe them off and stick them in the oven.
Stan
 
I got a 5 gal bucket and have been using it for about a year,No degredation yet,from what I've heard for the hobbiest maker it should last several years.
Stan
 
I've quenched hundreds of pounds into mine and I've noticed no problems with it. Just don't let it flare up (edge quench) and it lasts a long time in our kind of use.
 
I agree with the others get a decent quenching fluid I also use the McMasters oil. I like to clean the blade a little, couple passes with 400 grit just so I can see the color of the blade after the temper......steve
 
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