I tried to cut a rabbet around a 133mm x 213mm rectangle. I placed a white rectangle (133x213) inside a larger black rectangle 158mm x 238mm and created a pocket toolpath with 1/8 inch endmill. The resulting raised rectangle is actually 130mm x 210mm and the edge of the larger rectangle measures 162mm x 242mm.
I imported an SVG into Carbide Create and checked the sizes of the rectangles before exporting the gcode.
Any ideas for the discrepancy?