We developed the engraving bit together with a manufacturer in Germany. The engraving bit perfectly engraves FR2 PCBs.
The FR2 PCB in the picture is milled on a MINImill with ball screws and the PCB engraving set. The PCB is milled as shown in the picture.
Tip Diameter: 0.2mm with 30°
Engraving Depth: 0.07mm +-0.01mm with automated MINImill Software calibration
Collet Size: 3mm
Made in Germany for the MINImill and MINImill KIT