Shiplap 5-1/4" - 9

This 5-1/4" - 9 gap shiplap measures 5.250" in width by .750" in thickness. We recommend utilizing 5-1/2" wide blanks of four-quarter lumber for milling on commercial machinery. The gap shiplap contains a 1-3/4" broad flat line on the top left. One-quarter inch of this area gets placed in the rabbet on the right side edge. It's joined to two one-inch wide by 3/8" tall raised fillets divided by a 1-1/2" wide by 3/8' deep channel in the center. When two pieces of milled lumber join, they create a five-inch broad face coverage dimension for installation.

This professionally drafted template-ready CAD file drawing exchange file (DXF) (purchase in the box below) contains two high precision template designs to create profile cutters for this gap siding detail.

The current combined high-speed knife steel & template prices are listed below for quoting purposes. We fill a 60mm/2.375" cutter head on the rabbet on the left spindle. You may only need blades for a specific cutter head on the itemized costs, saving money by employing knives you already own.