Thread: Do I really need a lap stone?

I just ordered an 8x3 DMT8C from SRD...it should be coming Friday/Saturday - it was less than $45...it should be worth it, as I have been using wet/dry sandpaper, and while it works, it is messy and somewhat time consuming. If I can cut the time and do the lapping in the sink with the water running, the convenience alone will pay for itself. And it will never need lapping itself (unlike the Norton flattening stone).

Originally Posted by Razorburne

I just ordered an 8x3 DMT8C from SRD...it should be coming Friday/Saturday - it was less than $45...it should be worth it, as I have been using wet/dry sandpaper, and while it works, it is messy and somewhat time consuming. If I can cut the time and do the lapping in the sink with the water running, the convenience alone will pay for itself. And it will never need lapping itself (unlike the Norton flattening stone).

Exactly right!

Originally Posted by Razorburne

I just ordered an 8x3 DMT8C from SRD...it should be coming Friday/Saturday - it was less than $45...it should be worth it, as I have been using wet/dry sandpaper, and while it works, it is messy and somewhat time consuming. If I can cut the time and do the lapping in the sink with the water running, the convenience alone will pay for itself. And it will never need lapping itself (unlike the Norton flattening stone).

OK, I have a DMT8C as a lapping stone and my question might be silly, but here goes:
Does the DMT8C as a lapping stone needs to be lapped too? By what grit? A Wet and dry 80 grit sandpaper? Or is the DMT8C so tough that will ALWAYS remain perfectly flat? Does lapping a lapping stone makes sense? I told you it would be a silly question...

Thanks

Surprised no one answered your question yet.

The answer is no. If you have a diamond plate, its good until the diamonds wear out. If you have something like the norton lapping stone, you have to lap that with a diamond stone or something similar. Or sandpaper.