OpenSCAD models of V-Slot Extrusions of 20, 40, 60, and 80mm widths. You set lengths in OpenSCAD.
Modified V-slot extrusion 20x20 DXF to get DXF files for extrusion in OpenSCAD.
OpenSCAD V-Slot Models 2017-03-08
OpenSCAD V-Slot Models all sizes
OpenSCAD V-Slot Models all sizes