06-20-2018, 09:53 PM
(This post was last modified: 06-20-2018, 09:56 PM by KnifeGrinders.)
New Zealand researchers have compared durability of the edge on a knife sharpened with a commercial electrically-driven abrasive-belt knife sharpener (the maker is in their article) with the same blade sharpened manually with a whetstone.
The results showed that using a belt sharpener causes a blade to dull two times faster than the same blade sharpened on a stone.
"... it is thought that powered sharpening overheats and thus detempers an edge.
The softer, detempered structure of the metal causes the edge to fold over more quickly and more easily, resulting in a dull blade..."
Full article can be downloaded from the New Zealand Academy website https://waikato.researchgateway.ac.nz/ha...0289/10004
or from here:
https://core.ac.uk/download/pdf/44290183.pdf
The results showed that using a belt sharpener causes a blade to dull two times faster than the same blade sharpened on a stone.
"... it is thought that powered sharpening overheats and thus detempers an edge.
The softer, detempered structure of the metal causes the edge to fold over more quickly and more easily, resulting in a dull blade..."
Full article can be downloaded from the New Zealand Academy website https://waikato.researchgateway.ac.nz/ha...0289/10004
or from here:
https://core.ac.uk/download/pdf/44290183.pdf
http://knifeGrinders.com.au