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That's why I always raise a slurry at the ends of my Escher where it is thickest.

Josh,

Why lap so often? My coticule is still pretty flat after almost one year. I got my Escher cupped a bit and never bothered to lap it: great performance nonetheless!

Best thing to do is lap it with sandpaper. For Thuringers I use 220 followed by 400 grit sandpaper befor I send them to buyers. Just a piece wrapped around a wooden cube that is slightly bigger than...