Attached is gcode file generated by FREEWARE F-engrave (a poor man's VCarve Pro)
Material should be flat and at least 204mm x 150mm in size
Tool used is a cheap 22mm 60deg CNC V-Carve bit from ebay (you may substitute with 60deg 3/4" V-Carve bit)
Origin is mid-center  and z =0 is on top of the surface.
F =600 mm/min and S =12,000 rev/min cuts MDF well.
Change F & S to suit your material.