Added Seven Star tool steel composition, which is a Carpenter's version of the AISI M7 tool steel.
Thursday, April 1, 2010 22:51:09
Moved Carpenter CTS-204P steel into the same name group with Bohler-Uddeholm M390 isomatrix and Latrobe Duratech 20CV. It's the same composition, I just dug that up totay.
Thursday, April 1, 2010 21:46:56
Added Carpenter Hampden Tool Steel, AISI D3 in other words.
Thursday, April 1, 2010 21:39:20
Added Carpenter CTS-204P steel, high carbon, high vanadium, high chromium and all that stuff... Also, found that CTS-20P steel is an alias for the Carpenter's Micro-Melt 420CW tool steel.
Wednesday, March 31, 2010 23:11:17
I was gonna post it yesterday, but because of the sharpening ordeals and then outing last night, didn't have time to spellcheck and minor fixups. super heavy duty knife, and quite a collectible piece too. Busse proprietary INFI steel, 5/16 thickness, over 1lbs weight... You get the idea ;) Check the review for the details.
Saturday, March 20, 2010 22:14:12
Second group needed more serious sharpening, and 3 stones were used: 5000 grit Naniwa Chosera waterstone, 8000-12000 grit Kitayama waterstone and 10000 grit Naniwa Chosera finishing superstone, followed by 0.30mic and 0.25mic microabrasives and stropping on a plain leather. Knives sharpened in the second group: Global GSF-15 Forged Paring knife, Global GS-40 paring knife, Phil Wilson Chef's Knife, although this almost didn't need 5K stone, Trace Rinaldi TTKK. And in the end, Tojiro Flash Santoku wasn't really as aggressive as week ago, so gave it 5 strokes per side on a ceramic stick and them stropped on 0.50mic and 0.25mic microabrasives, followed by usual stropping on a leather. That's it for today, really tired.
Saturday, March 20, 2010 20:45:33
Group one can be described as minor touchups, used only 10000 grit Naniwa Chosera Finishing Superstone. As an experiment used Chromium Oxide(Cr2O3) on the stone afte rthe mud built up. That does seem to improve the edge polish and sharpness. Followed up with 0.5mic, 0.3mic and 0.25mic microabrasives, and stropping on a plain leater. Knives sharpended using this method: Scott Cook Lochsa folder, Benchmade 710 M2 folder, Watanabe Honyaki Gyuto, Aritsugu A-Type Gyuto, Watanabe 150mm Nakiri, Watanabe 120mm Nakiri. All wicked sharp and ready for action ;)
Saturday, March 20, 2010 20:35:36
I've been sharpening pretty much all day. THat Sekizo Sashimi knife was a real pain. Sharpened it yesterday for hour and a half, and ended up with rather dull edge. Went at it again today morning. Started with 1200 grit King waterstone, eventually I got it sharp. Still, it's not as sharp as any of the high end Japanese kitchen knives.
Saturday, March 20, 2010 20:22:13
Added composition of the Carpenter Micro-Melt M4 tool steel; Added composition of the Carpenter Micro-Melt M42 tool steel. Now the stones are soaking and I'm gonna sharpen that Sekizo kitchen knife.
Friday, March 19, 2010 18:15:36
Corrected invalid W-Nr standard name for AISI M4 tool steel.
Friday, March 19, 2010 17:32:19