Copemaster
Copemaster Moulding Coping Machine
Coping cuts the profile of one piece of trim into the end of another, so inside corners fit even when walls are out of square. The Copemaster Professional Moulding Coping Machine copies a molding profile and cuts the matching cope at the machine, which replaces hand coping with a coping saw. This collection also carries the CM1030 replacement 10 in. 30-tooth saw blade for the machine.
Buy Copemaster at The Tool Nut, a specialty tool store since 1994, with free shipping on most orders and rewards points on every purchase.
Copemaster FAQ
Why cope instead of miter inside corners?
A mitered inside corner opens up when the wall is not square or the wood shrinks. A coped joint butts one profile against the face of the other, so it stays tight. A coping machine makes that cut repeatable on crown, base, and chair rail.