Gridfinity Magnet Glue-up Jig

Background and Inspiration

I really liked the captured magnet style that EM used and I installed ~60 magnets with it. It worked well but I ran into issues with some magnet holes having looser tolerances. Being impatient, I didn't want to have to wait until the glue set on the loose holes.

I took inspiration from kmeisthax's design and designed a way to remove the magnets from the installation jig. This initial version is pretty crude and takes a bit to assemble, remixes are appreciated!

Overview

Note: This design is based around 6x3mm magnets as that was what I had left over

The design consists of two parts, a magnet carrier and the base plate.

The magnet carrier gets 4 sets of two magnets glued onto it. These act as posts to be inserted into the base plate. You could probably get away with just a single magnet of the end of a longer 3D printed post but I'll leave that as an exercise for the reader…

The base plate is mostly EM's design with a couple convenience features added.

Print Settings

I was printing these at 0.2mm layer height in PETG with a 0.6mm nozzle.

Assembly

This part is a little tough. The trick is to use as little glue as possible

1. Glue 4 sets of two magnets together. So you have 4 stacks with two magnets in each.
2. Insert a stack of two magnets into the hole on the back side of the base plate. Use another magnet on the front side to hold them in place. Repeat for all 4 corners.
3. Add a tiny bit of glue onto the exposed bit of the magnet
4. Use the tiny bosses on the carrier to help align the carrier to the magnets
5. Hold it and hope you didn't put too much glue on
6. Remove the 4 loose magnets on the front side of the base plate
7. Pull the carrier away from the baseplate and hopefully the magnets came with it

Usage

1. Just stack the two plates together
2. Load magnets on the front of the base plate
3. Insert the magnets
4. Remove the carrier to leave the magnets in the bin
5. Do the next one

Edit 2023-01-06:

• Added V2 of the base with slightly more clearance for the magnets just in case they glue together off center.
• Added some print settings

Edit 2023-01-09:

• Not sure why I didn't see it before but Jools has a very similar jig that is probably easier to assemble.