These knives offer an interesting subject they are made from a Powder Metallurgy (P/M) steel from Crucible Materials and the wrought (ordinary) D2 counterpart. Of course to focus on the steel itself the knives should be of near identical geometry, however the comparison here can seek to answer a slightly different question - "Can the advantages of P/M be seen when the knives are not identical?" For a knife user this is a valuable question to ask and be answered.
Signup thread : Passaround #1 CPM-D2 (Spyderco Military) and D2 (Mel Sorg)
Michael Cheshareck's work focused on the extended edge retention of the knives when slicing 5/8" manilla hemp on a polyeurathane cutting board. Sharpness was measured through slicing light cord under a given tension. The knives were reground to 10 degrees per side with a 15 degree microbevel from a DMT 600 grit diamond stone. Results: no significant difference in either initial slicing sharpness or extended slicing aggression in use between the blades. Discussion of the work :
Paul Hansen has proposed a large project which will compare the knives at various angles and grits as well as include other knives as a reference. It is currently in progress.
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