Use of the ejection rod for Tools in headstock or thread-rod for securing my drill-chuck in headstock always sucks, because the inner diameter of the mounted handroller ("handwheel") doesn't match the diameter of the spindle. So i made a simple centering jig for the handroller, now inserting any of the rods is easy and always centered to the spindle.
Note: Insert is slightly tapered to the top, this side goes in first. Maybe light sanding on the outside or some taps with a wooden mallet are necessary to mount it flat with the handrollers end
Printed with .24 mm layerhight, 10% infill, took 35min on my Bambulb x1c
Enjoy
The author marked this model as their own original creation.