Remix of two things I simply combined in Blender, the Skadis Holder that uses 4 Slots, extruded a bit for strength and had the dummy13 stand-mount part that connects to its back scaled up by 250%.
Printed it in PETG with I think 4 walls, it's almost fully solid anyway. Holding up since End of January 2025.
Orientation of the model was such that the Skadis hooks are “upside down” compared to how you'd actually mount them on the board.
Supports: Yes, necessary for printing the part for connecting the Dummy and the upper skadis hooks. I used tree supports for mine. Looking at the picture I took the print is a bit messy, but it does not matter too much, as it holds the Dummy very nicely.
The author remixed this model.
scaled the single part of the dummy13 up 250% and cut it where it intersects the IKEA Skadis fusion 360 file with 4 slots, which I extruded a bit for additional strength.