Thread: Lapping

Hey,

Just ordered the Naniwa Stone Set (5000, 8000, 12000) from SRD, but as I gather those stones need to be lapped periodically. How do you do that? I'm unfamiliar with lapping.

This is a commonly provided link to the Wiki, because it's so helpful!

If anything is unclear after reading that, just ask away.

Lapping is done for two reasons: To flatten the hone and to refresh the surface of the hone.

Thanks! The little walkthrough says "wet-dry" sandpaper. Does this just mean that it was wetted down, or is this some kind of brand or type of sandpaper?

No it is a different type of paper. Go to any autoparts store and they should have it.

Originally Posted by mscard

Thanks! The little walkthrough says "wet-dry" sandpaper. Does this just mean that it was wetted down, or is this some kind of brand or type of sandpaper?

Regular woodworking sandpaper will NOT work. Wet/dry can be used (surprise) wet or dry. That is the kind you want because it is unaffected by water.

Sounds good! Thanks!

While wet/dry sandpaper is appealing because it is inexpensive at first, do remember your stones will need regular lapping. IMO, a diamond lapping plate, such as the DMTC, is a better alternative - if used properly it won't wear out (cheaper in the long run) and it stays flat on its own (to me, lapping under a faucet is easier than getting a flat reference surface). This is just my personal preference, but I thought I'd share it.

Sorry Dylan its hard to read your post with out think about you "tongue lapping" your stones.

You know... I only asked others to admit that they lick their hones, I never said I do it.

I used to lap my Naniwas (and the others) with Norton 320.
Last week I bought a DMT Duo Sharp and I must say it’s really really good! It’s fast, “clean” and flat and you can use it for other sharpening purposes if you like.
I only regret that I did not buy a DMT long time ago! Yes, it costs a little but you’ll forget that as soon as you’ll start using it.