This tongue & groove flooring
moulding 3/4" - 31 measures .750" thickness, the width can be machined to any desired size within the parameters of the moulder or shaper utilized to mill the pattern. The profile consists of a 1/4" wide by 1/4" tall tongue and groove with a .006" void area in the joint for expansion and contraction of the wood during seasonal changes in relative humidity. The detail retains a small nail groove to hide the nail or staple head so it doesn't interfere with the joint, a 1/32" wide gap on the bottom side will assure a tight fit on the face side when two pieces of lumber are joined together during installation. The offset in height of the tongue and groove was intentionally designed to leave enough wood for sanding of the floor over the years without the nail groove ever being exposed, you can adjust axially to whatever height position you desire before milling.
This Cad generated dxf file contains four professionally designed profile templates with abundant information to help you create cutters for this common flooring detail, one set of two mills face side up and the other set mills face side down.
For knife quoting purposes use the calculator below, we have added only the important measurements. A brief detailed explanation on how to use the calculator is located here. Need some assistance with the dimensions? Print a copy of our fraction - decimal - millimeter chart, place it on the moulder to help operators save time and increase accuracy during machine setup.
Thickness = .750" / Depth of Cut = .262" (right blades) & .335" (left cutters).
Note: If you’re experiencing trouble printing to Full Scale, Go to File, Print Preview. Change
the “Shrink to Fit” option to 100%