This model for the ikea skadis uses the Skadis T-Nuts Mounting System for Ikea Skadis Pegboards.
See: https://www.printables.com/model/228663-skadis-t-nuts-mounting-system-for-ikea-skadis-pegb
Edit: 15.09.2025 - fixed issue where allignment guides were not part of the 3D model.
The author remixed this model.
I changed and added the alignment guides so the model can be printed without support.