Magnetic Door Holder for AniOne Dog Box

Overview

This is a magnetic door holder system designed for the AniOne dog box series. It replaces a previous lever-and-pin-based version I had made earlier, which turned out to be a bit inconvenient in daily use.

https://www.printables.com/model/1232671-anione-dog-box-door-holder-pin

The new design uses strong neodymium magnets to keep the door securely closed or held in place, without the need for pulling or turning anything each time you open or shut the door.

Included Files

To make it easy to use or modify, I provide:

.3MF file for direct printing on Bambu Lab X1C

.STL files for general 3D printer compatibility

.SLDPRT (SolidWorks) files for anyone who wants to adjust or remix the parts

Compatibility

This model was developed for the size M AniOne dog box, but it should work with other sizes as well.
If it is not fitting, you can adjust the files, feel free to remix them using the included SolidWorks parts.

How It Works

The system includes two printed components:

One magnet holder mounted to the box side

One magnet holder attached to the door

Once in place, the magnets align and hold the door firmly shut (or in position) when needed. Opening and closing is easy and doesn’t require any levers or pins.

Assembly & Required Parts

🔩 Side Magnet Holder (Mounted to Box)

Uses an existing screw on the dog box to mount one point.
⚠ You’ll need to replace the original wing nut with an M6 nut, as it no longer fits with the holder in place.

For additional stability, a threaded insert (M4, 8 mm) is molded into the part for a second attachment point.

You’ll need to drill a small hole into the box frame and use an M4 8 mm screw with a washer for this second mount.

🧲 Door Magnet Holder (Mounted with Cable Ties)

Attaches using 4 cable ties—no drilling required.

This allows for flexible positioning to line up perfectly with the side magnet.

Tighten the ties from both directions to fine-tune the position and prevent shifting.

🧲 Magnets

Uses two neodymium magnets:
20 mm diameter, 2.5 mm thick

Simply glue them into the holders using a strong adhesive that can handle the magnetic pull and occasional impact when closing.

Notes

Originally made as a personal hobby project, shared here in case it's useful to others.

You're welcome to tweak or remix the files to better fit your setup or box size.