Or ... use a calculator
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Show posts MenuQuote from: Ken S on July 22, 2024, 06:15:04 PMI think if I ever need to sharpen a ceramic knife, I will stick with the DF wheel.
Quote from: 3D Anvil on July 18, 2024, 05:08:52 PMBut from there I think it would best to move on to higher grits. I wonder if the Japanese Wheel would improve the SG result?
Quote from: kwakster on July 17, 2024, 11:16:38 AMScratches in a ceramic knife apex work as crack initiators, and when those scratches get smaller and smaller due to progressively finer polishing the apex becomes more resistant to chipping as well as keener.
Quotethe blade consistently separates along grain boundaries resulting in sub-micron roughness.
Quote from: kwakster on July 16, 2024, 10:45:55 PM[...] due to the much higher polishing process i have found the resulting edges to be less chippy [...]From a physical standpoint, "chippiness" will depend on intrinsic properties of the material used, and the thickness of said material.
Quote from: HaioPaio on July 15, 2024, 09:30:21 PMI believe this is an interesting read at
ScienceOfSharp.
It states that aluminum oxide abrasives are sufficient, however a much finer grit than the SG-250 is suggested.
Quote from: tgbto on July 12, 2024, 08:40:20 AMAnd for those who can't/won't spend that much on BESS hardware, a simpler approach with a cheap microscope and nylon wire (fishing line) can be a good burr detector : mark a point along the edge with a sharpie, set the wire down on a board, align the wire and the sharpie mark, cut the wire using a downward-only (not rocking) movement, ideally not all the way through the wire, and check the spot under the microscope. A dent in the blade will be an excellent indicator of a burr remaining along the apex.
All for under 20 bucks. Easily made even better with a support that will hold the wire taunt an inch above the board while cutting, done in like 5 minutes with a chisel and a 2x2x2 wood block.
Quote from: OBR on March 19, 2017, 12:34:38 PMOnce the burr was buffed off in the honing, the 180 paper wheel and the SB250 had larger "teeth" along the edge.
QuoteThe 'Free Grindstones for Life Certificate' guarantees you to exchange your grindstone if it wears down to a certain diameter. You can exchange your SG-250 Original Grindstone for Tormek T-8 if it wears down to a diameter of 7" / 180 mm, or your SG-200 Original Grindstone for Tormek T-4 if it wears down to a diameter of 6" / 150 mm. The exchange of worn-out grindstones will be administered by Tormek, and you will get at new Original Grindstone free of charge, shipping included. The 'Free Grindstones for Life Certificate' is valid for, at most, three (3) replacement stones in total within 25 years from date of purchase (based on the approximate service life of your Tormek machine).
Quote from: cbwx34 on June 24, 2024, 11:22:18 PMQuote from: Ken S on June 24, 2024, 11:01:25 PM...
the KJ-123 is a giant step ahead of the Anglemaster for setting knife bevel angles.
...
Exactly.
Quote from: 3D Anvil on June 25, 2024, 12:13:47 AMI do like to be able to set the angle to within about half a degree. Why? Because then I know exactly how to set my WS with blade grinder attachment to deburr the blade after sharpening, and at least as importantly, how to set it to strop the knife in between sharpenings.
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