Flattened stone

L

Lucky Bob

Joined
Mar 31, 2006
Messages
956
I just got a new extra-coarse stone (assuming it's AO) for my Gatco Lansky-type rig. I went to reprofile with it, and it got all gummed up, so I cleaned/flattened it on my cheapo diamond hone.

Problem is, my extra-coarse hone is now finer than my coarse hone! Any suggestions for how to re-dress it to something approaching its original roughness?
 
It sounds like you did not lap it enough. I would in general not recommend doing that with a diamond stone as it is a good way to excessively wear the diamond stone. You only need a piece of concrete or some sandpaper or even fine sand. You simply scrub the stone on the abrasive and rinse with water until you have remove the loaded surface. There could also be an issue if you used an improper lubricant, a type of really heavy oil with clogged the stone which can be either boiled or fired out.

-Cliff
 
It's not so much loaded, as it seems I've just taken all the roughness off the surface of the stone.

And no, I'm using the Gatco oil, and I've never had a problem with it before (it's fairly low viscosity, anyhow)
 
stones cut due to the inherent roughness of the abrasive. Some of them, like oil stones and some natural stones can wear and since they don't break down readily the particles stop being abrasive. This is why waterstones tend to be more aggressive in extended use. But typically once you lapp them flat, all stones, should return to full aggression. You can enhance the aggression of stones by basically giving them a really coarse finish, take a piece of 40 grit ZO for example and rub it across the surface of a 800 grit waterstone and for a brief period of time it will leave a much rougher finish.

-Cliff
 
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