PWC (jetski) thru hull bearing centering fixture. Printed on a creality halot one.
I am swapping a seadoo rotax 255hp motor into a kawasaki stx hull and I needed a way to set the axial, angular, and radial position of the thru hull seal so I printed up some guides to hold the tube on the driveshaft while I fiberglassed it in. It worked brilliantly.
I preferred the level of detail/quality/precision you get with the entry level resin vs entry level fdm. Since I only had budget for one I went with resin.