A friend of mine needed a ball marker for his pool table as he was getting kicks with his white ball and needed to clean it very often to avoid the kicks.
So here it is, a ball placer for a 1 and 7/8” white ball (47.625mm).
v2: minor adjustments made on side finger slots and ball placer base (widened hole at the bottom)
v3: renamed R-1 Ball Marker and made a more practical smaller-sized model
Printed in 0.2mm within about 45 minutes, I would advise a 0.1mm setting to get smoother curves on the ball slot but 0.2mm works fine as you can see in the pictures.