[13:00] Now that I've got a sprocket design that seems to grip the chain and I know what tolerances are likely acheivable, I started thinking about a possible test print I could use for a TestTetent. After letting my mind brew on some ideas over a couple hours, I'm going to first try and see if I can get something usable without any moving parts at all, and just have the ball chain slide over all surfaces.

The bottom has 4 M3 holes that are spaced 48 x 12mm apart, as I'm expecting the redesigned Tetrinsic to make use of integrated nuts in these locations. The holes in this model are self tapping since it's not like these test prints are going to be permanent.

The print is also 18mm thick, just like the expected real Tetrinsic.

While this concept is the largest yet, I'm hoping that there would be enough space for a thin battery that fits in the space available when 4 Tetrinsics are colinear.

[14:30] 

The solution... failed.

I printed out the first attempt and I was able to get the chain on but it was extremely tensioned. This was using 0 TensionOffset. The next print, which used 1.2mm TensionOffset, was suprisingly still tensioned but more manageable than the first attempt. The end-to-end length and height are 115.25mm and 28mm respectively.

The main issue with this solution is that the chains are free to independently slide, resulting in reduced comfort. Additionally, the friction resistance is quite high.