Great profile. The magnets didn't need glue, the fit required a tap from a small rubber mallet and worked well.

je n’ai pas réussi à le faire fonctionner. j’ai essayé ailleurs

This model printed and looks good, but my filament did not flow freely through it, so I removed it.

Printed fine but the holes/guides need to be reamed out and cleaned up after the print. I just used a drill bit. I also found the screw holes a bit shallow especially on the filament side for the M10 PTFE adaptors.