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Couldn't get an edge to stay on this homebrew one-piece razor. I'm starting to wonder if I did in fact over-temper it. I went all the way from bevel set to using my new little nakayama asagi and kiita nagura three times. Edge wouldn't hold after a solid hour or so of honing. I couldn't see any evidence of over-honing (other than the timeframe) but the edge seemed to roll and flake into sparkly crap, so maybe it was over-honed.
This may be a RSO for the learning books, but I may try once more with two layers of tape just in case.
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Yep. Either the geometry is too narrow or the steel is soft.
One pass at my burns and the edge fails.
On a lighter note, the combination of Chosera 1k, hideriyama suita and Nakayama asagi with kiita tomo nagura seem to work great! Will try another example on known steel.
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What is the geometry? spine thickness vs blade width?
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I don't have it in front of me, but it started out as 1/4" bar and was thinned while forging to about 3/16" and the blade is about 1". I know that's too long/narrow. I may go all the way back to the grinder and take it down another step.
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It could still be a combination of issues, but Imo that's way too thin to support a good edge.
At 3/16 thickness, that should not be wider than a 6/8.
If you work with bar stock that is 1/4 thick, you can upset it first, and then forge it wedge shaped. That way the spine will be thicker and the geometry will be much easier to get right.
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Why didn't I think of that?
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That's how we learn my friend. The kick in the seat is when you forget/don't do something and repeat a error, that's frustrating!:gaah:
Spend some time at the grinder and get it down to a smaller razor. The benifit will be a super thin bevel and the challenge will be not getting things too hot to kill the HT. Good practice no matter if it comes out to a razor or rso, win-win! I have made plenty of rso's, they just don't make it on here very often...
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In the end, I think this razor is looking better with a narrower blade anyway. It was just too long to start.
I will post pics later.
I also learned today that it is better to drill all the holes in scales before separating them and test-fitting the wedge. I drilled googly eyes in my first set of horn scales for another razor in this series (double pins on the wedge end are crooked).
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Fitted some pins today. This razor was started something like 2 years ago. Better late than never! Last one from that first batch.
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Needs to be tightened at the pivot pin and another coat of lacquer or polish.
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Also got this one to shave. For some reason I still could not sharpen this forged O1 except on my diamond film. At least I know now that the steel can survive a shave.
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