Thread: Should I lap or not?

OK so what's the best way to lap a coticule should I just use my 400 Dimond plate or would that leave to many deep scratches

Originally Posted by Bob92553

OK so what's the best way to lap a coticule should I just use my 400 Dimond plate or would that leave to many deep scratches

If you got your coticule new from a reputable seller there is no real need for lapping. The surface may be a bit on the rough side, which initially will make it work slightly faster, but slurry will smooth it out quite fast.

Personally I draw a pencil grid on the hone's surface and use wet and dry sandpaper on a glass surface, 360, 400 or 600 grit, depending on of which one I have a large sheet. I would suggest doing it wet, as the slurry generated by doing so will smooth out the surface as you lap.

For illustration: I never bothered to lap the last coticule (either side) I bought from Ardennes-Coticule in early 2013. It works just fine, always has.