The file 'Cable Holder With Magnet 3D Printer Model' is (stl) file type, size is 16.9KB.
This remix can hold a 8x3mm magnet. Just print then push the magnet into it afterwards.
I used these magnets: https://cl.gy/ZLnxn (Amazon Listing)
I'm going to make a stronger version using 10x4mm magnets in the near future and will post that stl.
Cable_Holder_-_External_Magnet__v1.11.stl | 44.5KB |