Simplified Magic Magnet Tool

@tjdesign's Magic Magnet Tool is super useful to avoid messing up the polarity of embedded magnets in your models. 

However, I didn't see why the model needed four different pieces. So I re-implemented it in Fusion but built the thread into the shaft, thus no need for a separate thread and pin. I also reduced it a bit in size. Preferring simpler designs, I made it just a straight rod. Lastly, I had a few issues printing the original when the shaft came loose from the steel sheet at it grew in height, so I modeled throw-away supports into the model to stabilize it.

Print and Assembly

Print two copies of the shaft (in different colors) and two copies of the cap. No supports needed. I like concentric bottom infill for both parts, and I added a bit of fuzzy skin on the shaft. See 3mf files. I wouldn't go beyond 0.2mm layer height to get good threads.

To remove the support structure, just twist and pull it off the shaft. 

Insert a 8mm x 3mm magnet (or smaller) into one of the caps and screw it on one of the shafts. Place a second magnet on the top of the cap, remember its orientation and put it in that orientation into the second cap. The two caps of your tools should attract each other.

Use

To quote tjdesign's original description:

Choose one color/design magnet tool to begin inserting magnets. I found it works best if I do one at a time, otherwise the glue dries too fast to do a good job. Put one magnet on the tip of the tool, one drop of glue in the hole, then use the tool to press the magnet in tightly. If the hole is loose gently slide the tool laterally to break the magnetic field. 

On the opposite side use the other tool you made to do the same thing. The two magnets should now attach perfectly. When the tip gets too messy simply print another one and replace the tip.

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