Crown 4-3/4" - 21

This elegant 4-3/4" - 21 crown mould measures 4.750" wide by .813" thickness. The pattern can be milled from four-quarter lumber. The free-flowing profile is comprised of a 21/32" tall half circle on top, connected to a graceful three tangent radius cyma recta in the center, joined to a small 3/16" tall bead with a two tangent semicircle cyma reversa and a 9/32" wide flat line at the bottom of the design. The spring angles are fixed at forty-five degrees, these specific back bevels set the installed height at 3-11/32" tall with a projection of 3-1/2" wide. Read our commentary about axial constant positioning for crown bevels. The article will help you dial this profile in axially on the first try when milling this detail, provided the machine is axially calibrated.