Description
The PM121T is the top cope head replacement for the Powermatic 2A double-end tenoner, a 4 in. x 3/4 in. corrugated back 2-knife head with 5/8 in. threaded bore for the upper tenon spindle. The top and bottom cope heads on the Powermatic 2A work in tandem to cut both shoulder faces of the tenon cheeks in a single machine pass — the PM121T handles the upper shoulder cut while the PM121B handles the lower. The corrugated back head geometry locks straight HSS knives in a grooved body for reliable cutting performance in solid wood tenon production for furniture, door, and window components. Replacement top and bottom cope heads must be matched to ensure both shoulders are cut to the correct depth simultaneously; replacing only one head while the other is worn will produce asymmetric tenon shoulders. The PM121B is the matching bottom cope head. Source description truncated; confirm 2A model compatibility and whether HSS replacement knives are included before ordering.





