This is a Gridfinity based organizer designed specifically to hold the awesome magnet pens designed by Nick Johnson. Please go check out his models.

There are two organizers included. One has 8 20mm holes that should accommodate most of the magnet pens. The second organizer has 4 22mm holes and 2 25mm holes to accommodate the larger magnet pens. Note, since the top of the organizers is at an angle, the print profile is set with a .12 layer height to better help with layer lines. If you don't care about the layer lines, you can increase this and have a faster print.

I hope you enjoy!