Center Groover — 1/4″ × 3/8″, Standard C&P, Mini-Pro (3/4″ Bore)

Cuts the 1/4″-wide, 3/8″-deep groove that seats a panel or glass edge in a stile-and-rail door frame. This is the center-groover option that substitutes for the standard tongue-and-groove cutter in Freeborn’s 10 and 50 series cope & pattern sets — you choose it at purchase to match the groove to your panel thickness, which is why Freeborn offers the set across a range of widths: the narrower millimetre sizes suit glass, the wider inch sizes suit solid wood panels. At 3/8″ depth it keeps the tongue-and-groove option available on the set. The set is two matched cutters; profile cutters are not included. Mini-Pro build: 3-wing, 3/4″ bore, 2-15/16″ diameter, counterclockwise. Sized rather than adjustable — pick the width that matches the panel or glass you are setting and it drops straight into the cope & pattern stack for a consistent, rattle-free groove across the run.