We needed an adapter from our Scheppach planing machine (Dickenhobelmaschine in German) to a vacuum.
On both sides the diameter gets tighter with 2 degrees skew.
It is designed quite heavy because of the forces and vibration.
Printing instructions
I have printed it in extruder PETG, 80% infill, 0.2 mm layer, standing on the bigger hole, without supports, outer brim.