Scraper sharpening article


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Thank you very much, @violins88, for posting this excellent paper.  While it is a rationally progressing, approachable introduction to the subject, it has become dated as SEM technology has progressed.  The best and most current work is here:  https://scienceofsharp.com/home/, and I strongly recommend that anyone with sharpening-nerd genes explore the articles there exhaustively.  It takes up where Verhoeven leaves off, and has oodles of pictures.

Those with metallurgical interests will note that the author of the OP paper is the scientist involved in the rediscovery of the genuine Damascus production process, some years back.  :)

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14 minutes ago, David Burgess said:

Wow, that was quite a read! Needed a little vodka to get me through it. :lol:

I would suggest that a really good and experienced violinmaker could hone:ph34r: one's sharpening skills more quickly and efficiently, in less time than it takes to read that paper. ;)

Yep, I confess that I took a quick look at it and saved it for reading when I find the time, I'll keep in mind your advice on vodka:P

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3 minutes ago, Violadamore said:

Thank you very much, @violins88, for posting this excellent paper.  While it is a rationally progressing, approachable introduction to the subject, it has become dated as SEM technology has progressed.  The best and most current work is here:  https://scienceofsharp.com/home/, and I strongly recommend that anyone with sharpening-nerd genes explore the articles there exhaustively.

Those with metallurgical interests will note that the author of the OP paper is the scientist involved in the rediscovery of the genuine Damascus production process, some years back.  :)

Scienceofsharp.com it's a real gold mine for sharpening nerds;)

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1 hour ago, Bill Yacey said:

Leonard Lee published this treatise some time ago; it's a comprehensive guide about sharpening just about anything, the metallurgy and physics of cutting edges.

Well worth the money.

https://www.leevalley.com/en-ca/shop/tools/books-and-dvds/32991-the-complete-guide-to-sharpening

That’s the book I bought when I decided to head down this path. A good book for learning a critical basic skill. 

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On 6/27/2020 at 6:58 PM, violins88 said:

This article is only for sharpening nerds. But that’s who I am.... partly.

https://www.tf.uni-kiel.de/matwis/amat/iss/kap_c/articles/verhoeven_sharpening.pdf
 

Interesting. Thank you very much for the link.

Forty or so years ago I was given a few short sharpening lessons by an old codger who was a professional carver. He used only a black Arkansas stone of somehow coarser grade and some kerosene. The stone had noticeable wear. He would sharpen any tool ( there were many ! ) using an 8 figure until a "wire" was formed. Then remove the wire by rubbing the tool perpendicular to the stone and then in 2-3 strokes would apply a 2nd bevel. Nothing else. The result was a somehow toothy edge which simply walked crossgrain through oak or maple. Took me a couple of years more recently to figure out why it worked so well.

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