Ever feel that your rolls have been rigged against you? Well, here's the solution a slightly rigged D20 that will be biased towards rolling 20's/1's depending on which side of the magnet you hold under the table. Preferably print with gyroid infill for better weight distribution and less infill for the dice to be more biased. 

Note that the callister font dice has much finer detail and is harder to print while the comic sans font one requires less detail

To insert the magnet into the print you can either print the 2 halved and glue them together or print the whole (with no supports) and insert the magnets mid print 

The magnet i used are 6mm diameter, 2.5mm wide button magnets 

VERY IMPORTANT: Print with the 20 face down for the hole inside to print vertically

This is my first uploaded file so it might not be the best :P