Binding Plates for Filament Rack System M2 & M3

Update:  2025.05.01
Per request, I've added a second print plate that includes versions of the binding plates with 3mm holes to support the use of M3 machine screws. Please ensure you review the image that shows the description of the plates, as the location of the holes varies between the front and rear side locations.  As always, likes and boosts are always appreciated as a sign of support.  Thank you to all those who have reviewed and boosted previously. Much appreciated.

Original Post:
First and foremost, I have to give credit where credit is due…  user Printerly has created an excellent modular filament rack storage system. It consists of several different parts that friction fit together, and they fit together well. Here's a link to his design:  https://makerworld.com/en/models/1028236?from=search#profileId-1010841

That said, I could envision myself attempting to move my assembled rack around and having it separate on me. Since his rack components already have various holes built into them, I thought maybe I could come up with plates that would align with those holes and allow me to secure the modules together. Yes, that will be more work, and much more work if I ever wanted to recombine the modules in a different configuration… but I know that it will be nearly impossible for me to accidentally pop it apart.

So what I've created are a series of joining plates that can be mounted using M2 x 10mm machine bolts and nuts. There are four different sizes that go on the sides (front and rear of the outer sides), and two others that are used on the back on the units. The binding plates are 2.5mm thick, and the holes are 2.5mm in diameter to accept the M2 machine bolts. My bed layout is designed for a Bambu Lab A1, but the binding plates can easily be re-distributed on multiple bed plates in BambuStudio if you're using a smaller print bed. Likewise, you can delete excess plates if you don't need as many. 

Refer to my first reference image for the four sizes and where they are installed. I've also included an image showing two of the binding plates as mounted on the back of a two-column assembly. The locations of the side plates is easily figured out based on the hole locations on both the plates and the rack modules. I printed mine using PLA, but it would work equally well using PETG if that's your preference.

I sourced my M2 x 10mm machine bolts and nuts via Amazon, though they're likely available from other sources as well.