Countersink grinding Attachment for D-Bitgrinder

This is a countersink sharpening attachment for a D-Bit grinder.
It fits on the HMB U3.

Turn yourself a 8mm piece of steel with 120° cone on one end, on the other a M5 outer thread. This is your Settingping. The Settingpin runs in the V-Grooves. These are helical, so a axial movement feeds your countersink when turning the spindle.
When clamping the Countersink, bring the settingpin in contact with a groove.
Turn the spindle anti-clockwise until the settingpin reaches the end of the groov