Straight Top Groover — 3/16″ Width, Pro-Line (1-1/4″ Bore)

Cuts a flat-bottomed 3/16″ groove for panel work, drawer bottoms and back panels, and does two more jobs besides: run it against the fence to cut a rabbet, or fit a 4″ diameter rub bearing and it becomes a flush trim cutter following a template or a previously worked edge. The straight top grind leaves a square groove with clean corners — nothing is rounded, coved or ogee’d. Freeborn indexes the series by groove width and the trailing SKU number is that width in sixteenths, so 003 is 3/16″, 008 is 1/2″ and 032 is 2″. Stack two groovers with shims between to cut a wider groove than any single cutter offers. Pro-Line body: 1-1/4″ bore, 4″ diameter, three wings, counterclockwise, in carbide or T-Alloy — carbide for general production, T-Alloy where abrasive stock or long runs between sharpenings justify the premium. The Mini-Pro counterpart is MC-62-003.