Crown 3-1/4" - 22

This standard 3-1/4" - 22 crown mould measures 3.250" wide by .750" thickness, allowing the detail to be milled sprung (laying horizontally flat during the machining process) out of four-quarter lumber. The historical profile is one of the most widely used patterns in the woodworking industry. It consists of a 1/2" tall vertical line on top, connected to a recessed (.015") two tangent radius cyma recta in the center, attached to a 13/64" vertical line that joins to a 13/32" cove and a 27/64" broad segment at the bottom of the pattern. The spring angles are set at forty-five degrees, these back cutters set the installed height at 2-11/32" tall with a projection of 2-1/4" wide.

Review our commentary about axial constant positioning for crown bevels, the article will help you dial this profile in axially provided the machine is adequately calibrated. Three high points in the detail were deliberately positioned on the same plane; our disciplined design features will assure excellent hold-down conditions while milling, as long as the machine pressure shoe is parallel to the machine bed plates.