A design for dispensing magnets one at a time. Looking for something to help when installing magnets into gridfinity parts, I came across the Magnet Insertion Tool by cjnaz, which I liked, but still needed a way to not have magnets act like a poltergeist was toying with me when I worked.

I do not know if or when I'll have the time to polish the design to a point that it would be easy for even beginners to print, but I'm posting what I have now in the hopes that it might prove useful for someone.

Also note, that the features are highly dependent on the size of the magnets being dispensed. The 6x2 magnets I got from Amazon are more like 6x1.62. Therefore, it isn't likely that a simple download and print of the STL files will produce a workable tool for others.

There are two versions:

• Version 1 is in a Fusion 360 file. It's the one that I did most of the design work in, so it has some inconsistent naming, parameters in the order I came up with them, and is a bit messy. It's the one with the large diagonal slice off the back to reduce the filament usage.
• Version 2 is an OnShape design where I decided to clean up the parameters (called variables in OnShape). It adds a cylindrical tool storage location including another magnet in the base to help secure it. It also slaps a 1x2 gridfinity module base to the bottom since I figure tools used to build gridfinity should have to work with gridfinity. It should be available via: https://cad.onshape.com/documents/fd32027a985bc33ea891cfb3/w/59eb6ed20ca7a7cd30f4ef31/e/0b0b6ec237fc732ffa5528c4

If you're dispensing 6 mm magnets, then the magnets in the base should be 5 mm.

The idea is simple. The slider has a hole in it that will fit a single magnet. When the slider is pushed all the way in, that hole aligns with the feed tube holding the magnet supply and the feed magnet in the base. The stack of supply magnets will then be pulled down so that the bottom most magnet is surrounded by the slider. When the slider is pulled all the way out, the hole aligns with the "front" magnet. Using a 5 mm magnet in the front, there will be a 0.5 mm ring a plastic holding the dispensed magnet 1 mm away from the front magnet. If you don't use a front magnet, the magnetic field generated by the magnets in the feed tube will cause the magnet being moved by the slider to jump up and stick to the side wall. The front magnet is close enough to keep the magnet in the slider stable, but separated enough that when you touch the pick up tool to the magnet in the slider, the pick up tool will always overpower the front magnet.