About this 3D model

For desk thickness of about 25mm.Use Neodymium magnet with thickness of 3mm and diameter of 10mm. If you have square shaped it would be even better. Mount to the table with three M3 screw and nuts. If you need other dimensions of this, let me know. I have initially shared this in Thingiverse https://www.thingiverse.com/thing:2883005 I am sharing the design also here. ;)