External mount ring for Zeiss lens in SONY FDR-AX700 camera

This ring mounts into the same slot as the lens hood that is usually shipped with the camera.
It embeds 4 magnets (5mm diameter x 2mm height) at 90º angles which are then used to attach custom parts, for example my custom designed lens hood (https://www.thingiverse.com/thing:6335812).
I have printed it with PLA and a pause mid print to insert the magnets. My printer has a ferromagnetic bed which helps to keep the magnets in place after resuming the print. My nozzle and other close parts don’t attract the magnets. You can use some glue when inserting the magnets in case your printer is different.
Remember to place the magnets with the desired pole facing up or down.
I am providing both the FreeCad file with the designed part, the .stl file exported from FreeCad and the Prusa Slicer file with all the settings for printing (including the mid-print pause to insert the magnets and the elephant food compensation setting that best worked in my case).