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Here's the link. Dilucot honing method - home of the famous Belgian Coticule Whetstone

Not sure if it's a circle, The youtube footage I've seen of a guy bevel setting he does a full back hone type lap alonge the length of the coticule. Not sure if that's what we're talking about here?...

Very interesting!

Am not familiar with the dilucot method, does that involve a back honing type stroke?