"Another cable chain?" "YES."
I kept the basic design from Wbarber69 et al, but this one has several worthwhile enhancements.
Pros: Stronger. Easier to snap together. Parametric. Easier to print. Cons: A little bit tight with 3 Cat 5 cables inside (you can set the width parameter to make it a little wider, though you will need a little support), sags a bit (see photos) - but print a few anti-sag links!
It's stronger because the pins are bigger and penetrate deeper. Fillets in all the right places. Some weakening fillets removed.
"Parametric" means you can adjust the parameters to change the design, without doing any actual work. Fusion 360 original file included, with all operations clearly labeled and dimensioned. If you want to take advantage of this, install Autodesk F360 and hit Modify>Change Parameters) User parameters set internal width and the length of pre-assembled chain so you may optimise it for your print bed.
Can be printed without support (with up to 16mm (possibly more) wide x 8mm high of internal space for cables).
It's easier to snap together because of a tiny graduated slot that lets the pins click in, but not out. This also makes it stronger.
Designed for holding up to 3 (tight fit though) Cat 5 multicore network cables for the MPCNC. This allows dual end stops, dual x axis stepper motors, the z axis stepper and limit switch, and 3 spare pairs, all in one cable chain.
Print it assembled (Not recommended if using ABS -because it warps) Special chamfers at the bottom make this chain much more forgiving when printing several links preassembled. The first layer is the worst place for the links to fuse together because the bottom layers squish and blow out. These chamfers save you, although there is a tradeoff: they do contribute to a little bit more sag. Overall I prefer them being strong and easy to print. If they do fuse, you almost certainly need to lower your bed or calibrate your printer, but they should snap cleanly and easily into motion using pliers.
Viva la Evolution!!!
I have just uploaded an Anti-sag Link which seems to work -Although I seem to be having problems printing it now - I don't know why. The pins are printing as if someone filed them off at 45 degrees, undermining the strength - perhaps some of you will have better luck printing it, maybe even solve this little mystery (see photo). It might help if you need your chain to hold horizontal in the case of a suspended Z axis chain. When printing these, do a test run an make sure locking pins are printed properly - I printed a few lately and the pins were not coming out right (not sure if it's a problem in my Cura setup, but check this because if the pins are no good, these links won't actually help you) .
Knock yourself out. ABS
0.175mm layer height is fine
The license for this chain is creative commons with one small caveat: anyone who uses it must print it in 80s fluorescent colours such as pink, neon orange, yellow green purple and light blue and you must wear happy pants.