Thread: Another hone I don't recognize

Originally Posted by sharptonn

Curious. Are you making the slurry with a diamond plate, or another stone? I read back and forth and did not see! Thanks.

I was using a diamond plate.

It looks like granite.

Originally Posted by sharptonn

Curious. Are you making the slurry with a diamond plate, or another stone? I read back and forth and did not see! Thanks.

I probably should use a diamond plate, but I was using my universal slurry-maker, a small Carborundum razor hone, which I lapped and rinsed before I made the slurry in the picture.

Originally Posted by DaveW

It looks like granite.

Thanks Dave, you're right, it does resemble granite. Maybe that will kick-start my brain.

Dont underestimate how fine granite can be! treat it like an arky in regard to surface prep and I think you will keep being surprised. Nice score Stimpy!

Originally Posted by stimpy52

Thanks Dave, you're right, it does resemble granite. Maybe that will kick-start my brain.

I have wondered for a while how fine granite could be if it were flattened and lapped (but not polished), as long as the surface was non-porous.

I'm totally guessing that it's granite, though, given how many different types there are. I lived on a retired granite mine growing up, but it was mined for buildings. Very uniform, but it looked a LOT like that. The stuff that's used for chem lab tables would probably also be good.

I have a couple of slate stones that look almost exactly like that, but they are significantly harder to lap. They would have taken me hours by hand with a 325 DMT. They also both look like they are absorbing water, but when you let them soak the change in weight is insignificant.