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03-26-2013, 03:34 AM #1
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Thanked: 51Can a razor with blown temper be re-hardened?
I recently purchased a razor from flea-bay, and it's got a blown temper.... I can flex the toe easily with just pressure from my thumb. Since the blade is all but trash and cost me less than $15, it got me thinking that it could be a candidate for me to give heat treating another try in my backyard coal forge. So.... that brings me back to the question posed in the thread title, can a razor with a blown temper be re-hardened? Would it need to be completely annealed first, or could I just take it back to a dull red glow, quench, and them temper at something around 230 degrees Fahrenheit? I realize that the whole thing could warp once heated, but once again, it's already screwed up.
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03-26-2013, 03:49 AM #2
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Thanked: 2027For sure it can be rehardend,but a $15 blade,why bother,go for it.
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03-26-2013, 03:53 AM #3
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Thanked: 51
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03-26-2013, 03:58 AM #4
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Thanked: 2027
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03-26-2013, 04:54 AM #5
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Thanked: 2591if the blade is full hollow or extra hollow you would be able to flex the steel.
The one way to tell if the temper is blown is to hone it and see if it will take an edge.
Re-tempering the blade would require knowing the type of steel and using the correct procedure wouldn't it?Stefan
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03-26-2013, 07:05 AM #6
A little knowledge is a dangerous thing
A hollow ground razor should be able to flex quite a bit. In fact, if you strop a razor like that with a bit of pressure, you'll see the edge ot the strop pushing a visible bulge in the blade. That doesn't mean there is a problem with the razor.
A wedge shaped razor can be heat treated again, but then it would need to be re-ground as well.
A hollow ground razor cannot be heat treated again. It is much too thin. The part near the edge would lose carbon and also crumple like a potato chip.Til shade is gone, til water is gone, Into the shadow with teeth bared, screaming defiance with the last breath.
To spit in Sightblinder’s eye on the Last Day
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03-26-2013, 10:53 AM #7
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03-27-2013, 02:26 AM #8
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Thanked: 51The temper is definitely blown. I've tried honing this razor no less than five times, and it'll end up with a wire edge coming off every stone I've got, Escher, JNAT, what ever... I also did a comparison between it and another of my razors with a similar grind, and while they both flex, this one flexes much more easily. It's not quite as floppy as an aluminum can, but it's not far off either. As for re-hardening it, it's definitely hollow ground, so I guess it'll just go in the trash pile. The scales aren't bad, so I'll definitely hang on to them.
@epd: no it's isn't a WB. It's a Perfecto that I bought off eBay about two weeks ago.
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03-27-2013, 02:30 AM #9
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Thanked: 2027Re- cycle bin is a good idea,let her die.