Hand Tools

Subject:
Re: short follow up thought....

David Weaver
Yes, with knives and chisels, it's a discussion about edge width and not a discussion about friction (at least not in most things).

What happens is the small deflection shown on 52100 (I suspect this would occur with 3V at 59 without enough unicorn) mocks a thicker edge whereas the shedding of small chips doesn't leave this behind. the edge gets through more easily because small chips still leave a thinner edge.

I think the two cherries knife is probably either too soft or too tough or both. If it's too soft, then the starting edge is not going to be as thin and it's not going to hold on as thin in use, and if it's too tough, it'll start to roll a tiny burr in both directions and feel even more dull.

When this little burr pictured forms on 52100, the chisel will bounce out of the cut more easily and it will shoot maple bits off at high speed. It's pretty offputting - you can tell by the behavior exactly when you'll be able to feel a little burr on the edge.

Friction issue (especally planing), a different issue. I couldn't find any discussion of high chromium steels having less friction, but suspect it's not that important industrially on metal to wood.

I could feel V11 getting through wood easily, though - some of that is due to hardness (but the japanese chisel is harder).

At any rate, talking about something different here. Finding key hardness for a given alloy will allow for a better initial edge, and one that's stronger, so it'll hold without having to shed as much before it's stable.

In a softer knife, the unicorn has to be bigger (so while I just love the way unicorn makes the buck 420hc entirely usable, it doesn't come off of the buffer as blinding sharp as a file-knife).

Messages In This Thread

52100 experimentation continues *PIC*
same chisels. *PIC*
Re: same chisels.
The reason for the choice...
Re: The reason for the choice...
Better than O1
relying on the charts...
caveat on my sharpening perceptions..
Re: caveat on my sharpening perceptions..
Re: caveat on my sharpening perceptions..
Thanks!
for the non-metal folks..
"through hardening"...
Re: same chisels.
Re: same chisels.
Re: 52100 experimentation continues
These get a trip to the freezer...
Re: These get a trip to the freezer...
if it's like the machine areas...
Maybe toughness *isn't* .....
Re: Maybe toughness *isn't* .....
A stake in the ground is needed
Re: A stake in the ground is needed
There's an absolute property..
optimizing hardness and toughness
Discussion and personal value
now I am confused more
Re: now I am confused more
Re: optimizing hardness and toughness
Thank you for the search results
Testing three chisels..
re-do with one of the (52100) chisels
question
Re: question
26c3 mule...
For those like me unfamiliar with 26c3
Re: For those like me unfamiliar with 26c3
Re: 26c3 mule...
Re: 26c3 mule...
Pictures
pics... *PIC*
(looking back at those four pictures...
When work pressure lets up some,
It'll look the same...
Re: pics...
Re: pics...
Deflecting vs. letting go
I think that's pretty much it...
Re: Deflecting vs. letting go
Re: Deflecting vs. letting go
I didn't check with a metallurgist..
26c3 pictures vs. ward later...
not that much later...the 26c3 *PIC*
Tempered to 380F? *NM*
Re: Tempered to 380F?
and the ward *PIC*
Request
Sure...
Temper temperature...
too much?
Re: Sure... *PIC*
Re: Sure...
David's knife
Re: David's knife
short follow up thought....
Re: short follow up thought....
Re: short follow up thought....
Re: Sure...
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