Iterating on the body shell

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Affixing anything to anything in such a way that it can be removed and repaired is a process that takes forethought.

With my early decision to implement a vector bot as the “shiftable weight”, it was imperative to find a way to attach panels to the outside of the sphere without inhibiting the wheels.

So, glue, right? Epoxy? I want these panels to be removable so I can make inevitable repairs and upgrades.

Bolting through the inner sphere was out. I can’t use magnets since the large magnet would just rip panels off with the dome.

I decided to use t-nuts. I would need to print spacers to make up the 3/16 or so difference between the panel circumference and the sphere circumference. I want to keep that gap for wires when I hook up the shell LEDs.


The spacers allow me to glue the t-nuts to the body without piercing the inner sphere.

It took me a few tries to get the spacer thickness just right. I settled on 2.6mm.


One of the panels can just be removed to access the inner vector bot. The others may need to be removed to get enough visability to assemble the bot in the sphere.

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