Thanks to the new members of our Knife Steel Nerds Patreon community:
Chris Hancock, Chad Morris, Edward Voss, Liam Gogley, Erik Turner, Nathan Raptis, Nick Dunham, Joe Busic, Will Red Five Forge, Dmitry Kiyatkin, Edward Edmonds, Asinelli, Mattew Reagan, Nate, Dan Barrett, Malachi Chou-Green, Nats Spawnee, McKenzie Kelsay, Jantz Supply, Adam Webb, Brian Baley, Blade HQ, and Mark Demshock.
References in no particular order:
[1] Verhoeven, J.D. “Experiments on Knife Sharpening.” (2004).
[2] https://knifesteelnerds.com/2018/08/06/sharpness-vs-cutting-ability/
[3] https://knifesteelnerds.com/2021/03/25/cpm-magnacut/
[4] Sharpening Supplies: https://www.youtube.com/watch?v=gnPLi7GuqsE
[5] Sharpens Best: https://www.youtube.com/watch?v=cAfe8ZYnlSU
[6] Outdoors55: https://www.youtube.com/watch?v=9ed9HesiwQc
[7] Walter Sorrells: https://www.youtube.com/watch?v=D4aFy3tRpI4
[8] Cox Workshop: https://www.youtube.com/watch?v=G8Tpi6HDqwM
[9] Outdoors55: https://www.youtube.com/watch?v=9Ygp4AoUUO8
[10] bhadeshia123 martensite formation: https://www.youtube.com/watch?v=OQ5lVjYssko
[11] hayden jin: https://www.youtube.com/watch?v=yiWXDA0KKZw
[12] Chuck Richards Knives: https://www.youtube.com/watch?v=OvC4M_JrJlw
[13] Verhoeven, John D., Alfred H. Pendray, and Howard F. Clark. “Wear tests of steel knife blades.” Wear 265, no. 7-8 (2008): 1093-1099.
[14] https://forum.spyderco.com/viewtopic.php?f=2&t=91530
[15] Kevin Raposo: https://www.youtube.com/watch?v=9pkY8e73of8
[16] https://knifesteelnerds.com/2018/06/18/maximizing-edge-retention/
[17] https://knifesteelnerds.com/2020/05/01/testing-the-edge-retention-of-48-knife-steels/
[18] https://knifesteelnerds.com/2019/05/26/new-micrographs-of-42-knife-steels/
[19] Moore, M. A., F. S. King, P. F. Davis, and T. C. D. Manby. “The effect of knife geometry on cutting force and fracture in sugar beet topping.” Journal of Agricultural Engineering Research 24, no. 1 (1979): 11-27.
[20] Landes, R. “Messerklingen und Stahl.” Aufl. Bad Aibling: Wieland Verlag (2006).
[21] https://knifesteelnerds.com/2019/01/21/does-acidic-food-affect-edge-retention/
[22] S30V datasheet: http://www.crucible.com/PDFs/DataSheets2010/dsS30Vv1%202010.pdf
[23] https://nsm-ny.com/wp-content/uploads/2021/07/CPM-MagnaCut-datasheet15.pdf
[24] Rehan, Muhammad Arbab, Anna Medvedeva, Berne Högman, Lars‐Erik Svensson, and Leif Karlsson. “Effect of Austenitization and Tempering on the Microstructure and Mechanical Properties of a 5 wt% Cr Cold Work Tool Steel.” steel research international 87, no. 12 (2016): 1609-1618.
[25] Park, W., M. R. Hilton, A. R. Leveille, and P. C. Ward. “Microstructure, fatigue life and load capacity of PM tool steel REX20 for bearing applications.” Tribology & Lubrication Technology 55, no. 6 (1999): 20.
[26] https://knifesteelnerds.com/2022/01/11/how-cold-for-cryo/
[27] https://knifesteelnerds.com/2019/04/08/does-sharpening-with-a-grinder-ruin-your-edge/
[28] S5 yield strength: Roberts, G A, and Robert A. Cary. Tool Steels. Beachwood, Ohio: American Society for Metals, 1980.
[29] Z-Wear toughness: https://knifesteelnerds.com/2018/06/04/toughness-testing-cru-wear-z-wear/
[30] https://knifesteelnerds.com/2020/01/13/s35vn-steel-properties-and-how-to-heat-treat/
[31] https://knifesteelnerds.com/2019/11/01/crucible-s45vn-steel/
[32] https://knifesteelnerds.com/2020/03/02/cpm-spy27-experiments-toughness-corrosion-resistance-and-more/
[33] https://knifesteelnerds.com/2019/04/22/a2-steel-history-and-properties/
[34] https://knifesteelnerds.com/2018/10/22/silicon-additions-for-improving-steel-toughness/
[35] https://knifesteelnerds.com/2018/04/23/what-happens-during-tempering-of-steel/
[36] https://www.stoneandsteel.net/services/knife-repair/
[37] https://www.eseeknives.com/warranty
What do you think of Diamond Blade Knives,made by stir forging the edge of the knife? They have tests proving the superior characteristics of their product and I would appreciate your honest thoughts and opinion. Thank you, Pat
https://knifesteelnerds.com/2020/02/03/friction-forged-knives-diamondblade-friction-stir-processing/
Thank you Larrin for the well researched ,comparative and honest answer to my question about the Diamond Blade product. I am actually thinking of trying one of Montana knife co./Josh Smith knives. I remember when he was just a kid. LOL
Hi I am not sure you wanted this posted here but i though you might be interested. I was doing a quick look to see what the community is saying about magnacut and came across this.
“With reduced Chromium, it is not stainless steel, but the perfect balance of Chromium and Carbon in its composition gives it great wear resistance and toughness.”
https://knifebasics.com/detailed-cpm-magnacut-steel-review/
This guy has done a positive review of magnacut but as you predicted in another article he is calling it a non stainless because it has less than 11% Chromium. He does note in the article that it has excellent corrosion resistance which should be the true measure of what is and isn’t stainless rather than an arbitrary Chromium number. It shows that there is still work to be done on the understanding of what is stainless steel.
Oh well. The “definition” of stainless steel has long needed improvement but I’m not sure that is even possible at this point.
Pretty poor definition when it doesn’t actually account for matrix chrome content instead of carbides. D3 isn’t stainless because it stuffs a ton of carbon to take chrome out of solution for more carbides.
At 25:12 what is the name of that sharpener? Thank you for your incredible work on blade steel development
Edge Pro
I had a Dulo knife made for me in Magnacut at 63 hrc and have noticed that when I sharpen it, I will sometimes get a wire edge that will break off the apex of the edge which forces me to have to resharpen it yet again. It takes me much longer to get a usable edge when the apex keeps breaking off due to the wire edge problem. Any thoughts on why this would be? I have sharpened well over 50 knives with my KME and do not have this problem with any other knife.
Thanks.