Magnetic shopping list V2 - configurable

A magnetic shopping list / grocery list which sticks to your fridge door. Write down missing inventory. When leaving for shopping, just pull out the paper and rip it off below

Model is originally from krutooo! See here.
The model is very nice, works well, but i only had round magnets available, so i modified the base to fit those.

This remix:

Changed model to fit round magnets and made it so its customizable using OpenSCAD

You need

• 4 round magnets (and optionally some self adhesive anti-slip rubber pad)
• Alternatively: double sided sticky tape or powerstrips.

Once mounted to the fridge, you also need a cashier paper roll, 70mm width (Diameter max. 70mm, inner diameter: 11mm)

Post printing

Glue the round magnets into the 4 sockets. 
I used UV epoxy, its clean, but you would need to print with translucent filament to cure the glue properly.

(Optional) Stick some self adhesive anti-slip rubber pad in the middle to avoid any movement of the holder (you can see the black pad in the 2nd picture).

Note about the magnets

Magnets are sometimes sold as “3mm height”, but are really 2.7mm in height. So holes are 2.5mm deep. See e.g. this link