A need for a magnetic mount was needed for a project and the below design was created to fill the need. It can handle up to a 6.5mm wide cable tie and is design to work with magnet 469-1040-ND. If needed the magnet can be removed using the rear hole on the mount.
The mount is printed with PLA and 0.2mm layer. There is a small lip that the magnet has to be pushed past and then it will be secure.
Here is the magnetic mount in one of the applications it was designed for.