Bellows cover

I'm using two of these bellows to cover the upper and lower exposed portions of the lead screw on a force meter I'm using: this one. I cut some MDF and it got dust all in the grease and I had to clean and regrease it GRRRR. So yeah, here we are.
I printed this using TINMORRY TPU. I like the filament pretty well so far and it's cheap so bonus. If you don't like the color you do you boo.

The inside diameter is 17.5mm and the screw holes are 4mm. I highly doubt that the mounting pattern I'm using will match what you need hence the step/f3d files. I added "Bellows Parts.stl" and .step that has only the two basic components needed to make your own length (multiples of 10mm). Just flip the base. The split components are in the f3d file along with the sketches.

Compressed length = design length - (number of pleats) * 6.5-7.0mm

The STEP and f3d files are the latest version (newer than my printed version). Since I haven't printed the entire thing I'd consider it beta but I did print a 3 pleat test and it does have improved flexibility over the original due to the added space in the folds for the material to move around in. See the pic.

I printed it with organic supports as you see in the pictures. The 3mf file has supports painted on to minimize the surface contact of supports and it worked great. Without those it was all over the place.

The layer adhesion has been fine. The wall thickness is like 0.85mm and it's holding up great when I extend it (I'm not trying to rip it apart of course...)

I designed both versions (original and updated) specifically for a 0.2mm layer thickness (multiple features are exactly 0.2mm high and the entire thing is supposed to be a multiple of 0.2mm) (see pic). Lighten up Francis, I'm a Fusion 360 newbie. The dimensions are like 80.00006 or some nonsense so whatever.

Hope it's useful have fun