Makerbeam XL Tool-less Attachment System

This an alternative to the typical makerbeam nut receiver as designed in the Voron No-Drop Nut design but completely redesigned for a tool-free attachment mechanism.

The receiver uses two spring arms to retain a ball-shaped bolt tip that gets pushed into the receiver.

Parts:

• receiver.stl: this is a part designed to be slid into the makerbeam xl extrusion from the end. It should be sized perfectly to friction-fit in place in the extrusion, but you may need to scale your print up or down but a fraction of a percent to get proper fitment depending on your material. Note: the internal “arms” are designed as a spring mechanism, and work best when using a workable material like PETG. YMMV with other materials.
• *mm.stl 0.5-12mm “bolts” for interfacing into the receiver. The file names here indicate the thread length, aka the area between the countersunk “bolt” head and the “bulb” or “ball” at the end (including the “neck”). These have an M4 countersunk  bolt head, and the shaft and tip should fit through any M4-sized hole. The ball tip is sized at 3.35mm diameter, which on my printer (Bambu P1S printing on Bambu Labs PETG-CF) results in the ball being perfectly sized to friction fit through the opening of the makerbeam xl extrusion. When you insert these into the receiver, you'll have to push lightly to get it through the opening. Again, this is best printed from a workable material like PETG rather than a brittle material like PLA, but give it a shot and let me know how PLA works for you!

Print settings:

I used a 0.4 nozzle with the 0.08mm layer height preset with my Bambu Lab P1S. Try to use as fine of a print profile as you can, since some of the spring parts are pretty thin. No clue if this would work on a 0.6 or higher nozzle.

WARNING: I wouldn't recommend using this attachment for any critical pieces or within/around dangerous work surfaces or with fragile items - I give NO guarantees about the retention ability of this part.

My usecase is to fit case panels onto a PC case. Aesthetic pieces or non-functional parts that need to be frequently mounted and unmounted are ideal for this type of attachment.

I'm also attaching an openscad file for future remixing.