Dovetails of another kind
Knapp joints, also known as pin and cove or half moon joints, originated as a machined joinery option in the 19thcentury.
In this video, Sunshine Coast woodworker, metalworker and photographer Neil Paskin modifies a spade drill bit to cut the round pins and makes various jigs and templates to successfully replicate this rounded variant of a dovetail joint.
See Neil Paskin’s website at paskmakes.com