The original Model is from:
Axle Pin (Without Friction Ridges) by Rmiddaugh on Thingiverse: https://www.thingiverse.com/thing:4669974
Axle Pin without friction. Worked very well on my X1 Carbon with a 0.2 Nozzle.
Deutsch:
Achs-Pin ohne Reibung. Super Ergebnis auf meinem X1 Carbon mit einer 0,2 mm Nozzle.