I present a 3D model of a marker holder for a board/refrigerator on magnets. The dimensions are selected for Brauberg markers (holes 12 mm + 1 mm).

File format: .scad , .STL

Additional: If you downloaded the .scad files, you can adjust the hole sizes for the magnets. The original file has 2 parameters: hole depth (magnet_slot_depth) and diameter (magnet_diameter).
You can also try to adjust the variable marker sizes (marker_diameter), the code is written in such a way that it should adapt to changes (but this is not certain).

Instructions for use:

• Download the necessary files.
• Export data in .stl format if you downloaded the .scad file.
• Print (I printed without support, with the holes for the magnets facing up)
• Glue the magnets into the special grooves for magnets.