Thread: Did I lap properly?

I thought about pencil, but I did not want it to wash off. Sharpie stays until it is rubbed off.

Did you have this experience with the pencil?

Originally Posted by singlewedge

I thought about pencil, but I did not want it to wash off. Sharpie stays until it is rubbed off.

Did you have this experience with the pencil?

It doesn't wash off . I wouldn't want to use a sharpie as the stone might absorb some of the ink and it might require removing more material.

The only time the pencil comes off prematurely is when there are parts of the stone that are close to being flat and the built up slurry takes it off. This does take a bit though, the slurry doesn't take it off that fast.

I re-do the grid when all the pencil is removed and rub it a few more times. The pencil on the flat part comes right off and I can now see if there are still pencil marks. I have one coti that I lapped a few times and there is still pencil on one of the corners. (It's a bout and the corner is out of the razors way and would require too much material to be removed to get flat.)

Never experienced the soaking effect of sharpie. I always go over the stone till all the maker is gone, then just give it a few more rubs.

Hasn't impacted the surface at all. No residual ink or spots on the stone.

Originally Posted by JCitron

The only time the pencil comes off prematurely is when there are parts of the stone that are close to being flat and the built up slurry takes it off. This does take a bit though, the slurry doesn't take it off that fast.

I re-do the grid when all the pencil is removed and rub it a few more times. The pencil on the flat part comes right off and I can now see if there are still pencil marks. I have one coti that I lapped a few times and there is still pencil on one of the corners. (It's a bout and the corner is out of the razors way and would require too much material to be removed to get flat.)

I lap mine under running water so no slurry builds up. As long as it is flat you did it right. I have never rounded my corners.

Having learned how to post pictures, here's a photos of the rounded edges. Does it look okay?

In the third picture I can't really tell about the bottom-right corner. If it's like the other corners/edges, it looks good to me.

you may want to ease over the vertical edges as well. Helps to prevent those little chips