Thread: Question for DMT users

Thanks for the update.
Concerning the Wade & Butcher: a rule of thumb I try to adhere to is this: if 15 minutes of work don't complete the bevel, jump down to a coarser hone.

Here's some simplified maths, based on the particle diameter of the DMT hones, and how that relates to the speed of material removal:

DMT-EE: 3 micron - speed ratio: 1
DMT-E: 9 micron - speed ratio: 27 (in one [9 micron]³ fit 3X3X3=27 [3 micron]³)
DMT-F: 25 micron - speed ratio: 512 (in one [24 micron]³ fit 8X8X8=512 [3 micron]³)
DMT-C: 45 micon - speed ratio: 3375 (in one [45 micron]³ fit 15X15X15=3375 [3 micron]³)

Hence, 1 minute of honing on the DMT-C (325 grit) will take you a good 56 hours of honing on the DMT-EE (8000 grit). As I said, this is oversimplified: it supposes cubic honing particles that fully penetrate the steel, but it still gives a fair idea of the exponential differences between different hones. When you're only removing scratch patterns further up in the honing progression, it does not matter that much, but when you need to remove a solid layer of steel to complete the wider bevel of a wedge or 1/4 hollow, realizing this really can make the difference between hours or minutes of honing.

Bart.

Wow, thanks Bart. That explains a lot actually. It looks like I'm going to have to break out the wet/dry yet again.

I have a vintage coticule that has fine grooves worn in one of the corners where the previous owner would have drawn the edge through the groove/s.

Drawing very lightly in a sawing motion at a 45 degree angle on a corner edge of a coticule maybe 10 passes or less makes for a perfectly straight edge under magnification and a great and quick place to start setting a bevel. Nicks and chips.......gone.

Chris, I think that in the first of the Mastro Livi honing videos he draws the razor's edge across the edge of one of his hones. Perhaps that is for the same purpose. A link to the vid thread is here: http://straightrazorpalace.com/video...vi-videos.html

Sorry, I know this may be