Hand Tools Archive

Moving the needle
Response To:
Jim - here's your guy ()

Bill Tindall, E.Tn.
Dulling a struck chisel by micro folding or micro chipping has been discussed on the Forum for many years. As confirmed with a conversation this AM with a mechanical engineer these are the failure mechanisms for a rod(chisel) with sufficient force applied along the long axis, even a force as perfectly parallel as can be possibly achieved. No flaw of force application is necessary if the force is sufficient.

The date on my early microphotographs studying this kind of dulling is 2003. So, for something like 17 years this effect has been known on this Forum for someone to do something about.

Some years ago LV did something about it. They introduced a chisel made from a steel that could be taken to higher hardness while maintaining toughness. Simultaneously increasing both these steel properties resists this kind of dulling and many noted an improved chisel as a result.

There is no evidence presented to suggest that Warren's stropping or anyone else's preparation produces the physical properties of the edge Mr. Weaver described. If anyone can make that claim document it with a picture that shows equivalence to Mr. Weavers picture and description, and describe exactly how this edge was achieved so others could repeat it, and you get the early claim date on this "invention", not Mr. Weaver.

But even if person XX has been using this kind of edge for 40 years there is no credit to be offered until this person "moves someone else's needle". "Moving the Needle" is a phrase a colleague coined to describe an activity, or disclosure that caused something different to happen. Kees and Pan writing moved the needle on using the cap iron. Elliot moved the needle on sharpening abrasion resistant tool steel. Etc. If someone has a useful technique, do something to get others to adapt it. This Forum provides the opportunity. Those benefiting will reward you with "credit" for the information.

Mr. Weaver moves a lot of needles. How? He tries stuff. When he thinks that something he has tried is beneficial he makes a full disclosure of what he did, how he did it and what the result was. Others can then repeat the work to confirm the result. It sounds like Science, the activity that began in the Renaissance which has moved a lot of needles. The people that get credit are the ones that published work for others to learn from.

Messages In This Thread

Weaver chisel grind *PIC*
Some quick tests (lots of pictures) *PIC*
Some chisel pictures *PIC*
Re: Some chisel pictures
Re: Some chisel pictures *PIC*
astonished by picture quality *NM*
excellent pictures!
Another test *PIC*
Re: Another test
Re: question *PIC*
Re: question
could be a database issue...
Second try for picture *PIC*
yellow pine *NM*
Those pictures..
Nice piece of work
Re: Nice piece of work
Light source?
Re: Light source?
I've made a video.....
video...not for the meek...
It's a very funny video
comments on the two pictures.....
bevel width
It's the scale that escapes me
Re: It's the scale that escapes me
Looking forward to it, thanks! *NM*
More on the Weaver Bevel
Re: More on the Weaver Bevel
the premise is different in this case
I don't agree with limitation of your premise
You nailed it
This is hilarious
Jim - here's your guy
Well that escalated quickly.
Moving the needle
Re: Moving the needle *LINK*
Thanks for the memories *PIC*
Absolutely *LINK*
Positioning *LINK*
Where to find unhndled Narex chisels? *NM*
Taylor Tool Works
narex and their hardening....
how I achieved the Weaver Bever
Weaver Bevel
Further defining the Weaver Bevel
perception of penetration?
solving a problem, not creating one...
Re: solving a problem, not creating one...
rolling over edges....
On secrets, incantations and open source
Weaver grind—how is convexity added?
Marc Adams
Could've been felt...
Re: Weaver grind—how is convexity added?
The world is upside down :)
I took a nine day Sellers course
Re: I took a nine day Sellers course
it makes sense
How about making a video?
Period costume?
Re: How about making a video?
Trying things out
Re: Trying things out
Re: Trying things out
failed to figure things out...
Re: How about making a video?
Re: How about making a video?
variations on the already done...
thoughts *PIC*
Re: Weaver grind—how is convexity added?
Re: Weaver chisel grind
making peculiar names
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