3x 6mm Cylindrical Magnets
1x Pen Spring
The cylinder works on its own if needed, but is equal in functionality to the original if properly assembled. You need to push the plunger into the center hole of the cylinder, so that the small nipple pushes through the hole. Then, insert half of a pen spring after it, so that the plunger can slide forwards and backwards. Follow this with 2-4 6mm cylindrical magnets, which hold the hex bits in position. Finally, attach the plug with the nipple facing outwards and superglue the plug into position. Let it dry and voila!
I used a stock Ender 3 to print the parts out of PLA, using default slicer profiles. Using a raft or a brim can make the plunger and cap not fit properly, so use those with caution.
The author marked this model as their own original creation.