Magnetic paper scroll holder for notes and shopping list

Here is yet another paper scroll holder.
Prints with no supports and has little pits on it's back to place magnets in there.

I recommend using super strong neodym magnets.
Paper scroll should have less than 80mm width.
The inner diameter of paper scroll should be more than 12mm so it can spin freely
(the post is 11mm thick).

Diameter of the magnets should be less than 9mm and as thick as 2mm. Even when they are thicker it should still be ok.

It helps to put some thick paper in the b