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Easy DIY black oxide! 395

No Life Club Posts: 1,315
Easy DIY black oxide!
« on: July 10, 2020, 04:15:45 PM »
I had no idea how easy this actually is. Simply heat up your tool with a propane torch until it starts to change color. It doesn't have to get red or even orange, but you will notice a change in the sheen of the tool. Make sure that sheen change is uniform. When the tool seems ever so slightly orange, plunge it into used motor oil. Wait for the smoke to stop and the tool to cool, take it out, and BAM. Black oxide.

This works great for small, short tools that can be evenly heated. For longer tools I think I'd need a rosebud tip on my propane torch to be able to get an even heating.

The results are pretty good. This was originally a silver SOG 1/4 socket holder which I dremeled and filed to fit an MP600. Once it fit, I heated it up and plunged it into motor oil, not really thinking it'd work all that well.... but the results are exceptional!

Charles.
Global Moderator Abandon All Hope Ye Who Enter Here... Posts: 48,038
Re: Easy DIY black oxide!
« Reply #1 on: July 10, 2020, 06:07:04 PM »
You have changed the heat treat and temper of the tool though.
Full Member Posts: 101
Re: Easy DIY black oxide!
« Reply #2 on: July 10, 2020, 06:29:19 PM »
Yes, its never a good idea to heat up steel to the point that it changes colours.

On a frying pan you called that seasoning  ;)
No Life Club Posts: 1,315
Re: Easy DIY black oxide!
« Reply #3 on: July 10, 2020, 06:41:24 PM »
Perhaps I have, but for a bit driver I don't see a large problem with this. I've already tested it with some sockets and bits and it did not bend or break. The handles or pivot will bend before the tool breaks.

It might not be a good idea to do this for files or blades, but it worked well for this, and I'm going to try it on a wood saw next.

Charles.
No Life Club Posts: 4,293
Re: Easy DIY black oxide!
« Reply #4 on: July 10, 2020, 09:42:51 PM »
:popcorn: Looking forward to see how the saw performs after.

Sent fra min FRD-L09 via Tapatalk

No Life Club Posts: 1,315
Re: Easy DIY black oxide!
« Reply #5 on: July 10, 2020, 09:52:17 PM »
I'm going to try and see how well it works at lower temperatures, without heating the metal until it changes color.

That said, a fast quench does harden steel, and the part was never heated all the way through either. Soo..... it might work. It might be a terrible idea. I'll get a 2x4 and time how long it takes to saw something before and after, and then how fast it is after five cuts through as well. I'll be a fun test.

Charles.
Hero Member Posts: 995
Re: Easy DIY black oxide!
« Reply #6 on: July 11, 2020, 12:56:31 AM »
 :cheers:
 :popcorn: :popcorn: :popcorn:
Full Member Posts: 211
Re: Easy DIY black oxide!
« Reply #7 on: July 12, 2020, 02:11:43 AM »
Used motor oil-extremely carcinogenic. Don’t go sucking those fumes down.


Sent from my iPad using Tapatalk
No Life Club Posts: 1,315
Re: Easy DIY black oxide!
« Reply #8 on: July 12, 2020, 04:13:39 AM »
Only in California. I’m in North Carolina so I’m good.

 :pok:

Charles.
Just Bananas Posts: 73,671
Re: Easy DIY black oxide!
« Reply #9 on: July 12, 2020, 02:21:19 PM »
Interesting to see how the saw will last  :popcorn:

fail to prepare prepare to fail

 

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