I recently bought a boxed set of 5 Famag Forstner Bits at the Harrogate Woodworking Show (UK), along with a couple of larger individual sizes. As I was using Gridfinity in the drawers in my workshop, I created this tray to hold all seven bits, along with the drill bits and Allen keys that came with them. The Allen key cutout is just deep enough to hold 3 keys stacked.

The Forstner bits sizes (in mm) are 50, 40, 35, 30, 25, 15, and 10 on a 4x4 Gridfinity base (no magnet holes).

Printed in Grey Sunlu PLA 2+ filament, with 0.2mm layer height, 3 perimeters and 15% infill.