tool steel application

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tool steel application adsum 04-12-2008
Posted by Jim Wilkins on April 13, 2008, 7:01 am
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>...I have cut some .125"
> O-1 tool steel to function as the new irons.
> =A0Do I need to temper the steel?
> =A0 Thanks for the education...Bob

The hardened steel will be brittle like glass if you don't temper it.
Grind the surface clean and heat the center part of the blade until
the cutting edge turns straw yellow to light blue. The rest of the
blade could be dark blue, brown, purple etc.

Discarded circular saw blades are a good cheap source of steel for
home-made tools. Whether it is oil or water-hardening doesn't matter
for thin steel. I anneal the stuff by wrapping it in flattened tin
cans and tossing it in the wood stove. Rub some Ivory soap on the
steel to reduce scaling.

Jim Wilkins

Posted by Maxwell Lol on April 13, 2008, 9:11 am
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> So here's the deal- I have some antique wood planes that I'll use- I
> don't want to use the original 'irons' (metal scraper part) because
> they are pitted & preserved for history's sake.

They sell replacement blades - thicker and tempered properly.
Highland Hardware for one.

Posted by Wes on April 13, 2008, 10:08 am
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>So here's the deal- I have some antique wood planes that I'll use- I
>don't want to use the original 'irons' (metal scraper part) because
>they are pitted & preserved for history's sake. I have cut some .125"
>O-1 tool steel to function as the new irons.

1500 degrees 15 min, quench, don't allow it to go below 125-150 degrees,
temper at 350F.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

Posted by adsum on April 17, 2008, 4:12 am
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> >So here's the deal- I have some antique wood planes that I'll use- I
> >don't want to use the original 'irons' (metal scraper part) because
> >they are pitted & preserved for history's sake. I have cut some .125"
> >O-1 tool steel to function as the new irons.
>
> 1500 degrees 15 min, quench, don't allow it to go below 125-150 degrees,
> temper at 350F.
>
> Wes
> --
> "Additionally as a security officer, I carry a gun to protect
> government officials but my life isn't worth protecting at home
> in their eyes." Dick Anthony Heller

Guys, I can't thank you enough. Knowledge increased quantum leaps. BTW
I should have mentioned that the irons are for a molding plane,
otherwise I wouldn't be going through this. Does make me wonder what
our founders experienced.

Posted by Jim Wilkins on April 17, 2008, 7:22 am
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>
> Guys, I can't thank you enough. Knowledge increased quantum leaps. BTW
> I should have mentioned that the irons are for a molding plane,
> otherwise I wouldn't be going through this. Does make me wonder what
> our founders experienced.

I'm cutting firewood (the Husqvarna remark, Ed) on the land of a
neighbor who makes custom furniture and doors in various antique
styles for the Boston market. I help him by making and sharpening
tools.
I think the most important thing we've learned from dissecting old
woodwork to copy it is that those old immigrant cabinetmakers were
very clever and found simple ways to accomplish complex-looking
tasks.
Perhaps their knowledge is still common in Europe but they didn't
write it up in English for us here, so about all we have to learn from
is their work.

You might like the tool-making books by Alexander Weygers.

Jim Wilkins

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