One of my accessories didn't quite fit in MarcoZ76's original model, I think this was because on my accessory the protruding tongues are about 0.2mm thicker than normal.
I've slightly modified his original model to increase the size of the bore and the grooves by a small amount, this makes it fit both of my accessories perfectly.
I printed in PLA with 0.3mm layer height, 30% gyroid infill, and no supports. PETG would probably be better but for me PLA was flexible enough to clip onto the wand.
The author remixed this model.