Lapping a BB/Coticule

**JimmyHAD** · 03-16-2009, 01:36 PM

Originally Posted by Dups

I've used the 820 grit before on other hones and it usually doesn't take that long to lap. It raises a nice slurry very quickly.

Should I start with the 320 and then move to the 820 for some finishing?

That is what I would do if I didn't have the DMTs to work with.

**Dups** · 03-16-2009, 01:38 PM

I didn't think the stone would be this thin. It's probably about 1 inch thick for both Belgian blue and coticule.

**JimmyHAD** · 03-16-2009, 01:51 PM

Originally Posted by Dups

I didn't think the stone would be this thin. It's probably about 1 inch thick for both Belgian blue and coticule.

That will last a lifetime unless you start taking in honing for others and maybe even then. I've got vintage coticules that are half of that. Vintage Eschers usually run 3/4".

**Dups** · 03-16-2009, 01:56 PM

I think I'm going to try to lap it with my 820 grit. I'm tired of paying for sandpaper heh. It's pretty expensive here. $7-8 doesn't sound like much but when you need to buy it often it adds up fairly quickly.

**JimmyHAD** · 03-16-2009, 02:14 PM

Maybe biting the bullet and getting one of the DMT diamond plates would save you money in the long run.

You can get them here if the shipping to Canada and the VAT aren't prohibitive. The DMT D8c 325 or the XX are the best for lapping.

**Dups** · 03-16-2009, 02:16 PM

I can't afford another stone right now, but I will consider it for sure for my next purchase. I'm hoping that the belgian stone will need a bit less lapping than the norton too.

**Utopian** · 03-16-2009, 03:49 PM

Originally Posted by Dups

I didn't think the stone would be this thin. It's probably about 1 inch thick for both Belgian blue and coticule.

Most of mine are thinner than that. I'd guess that your coticule is thicker than average.

**StraightRazorDave** · 03-16-2009, 03:53 PM

Originally Posted by Utopian

Most of mine are thinner than that. I'd guess that your coticule is thicker than average.

Ditto. I just whipped out my ruler and my two coticules. 1" thick coticule/BBW is a fair sized one. My larger coticule (with only a slate backing) has about a 1/2" layer of coticule, and I thought that was nice and thick.

So you have a nice thick stone, it'll last you a looooong time.

**Dups** · 03-16-2009, 04:00 PM

What grit do you use to lap yours fellows?

**Dups** · 03-16-2009, 04:55 PM

Any risk of damaging the stone if I use 820 grit?

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