Had a tough time removing support from the front, but managed!

Printed with fuzzy skin, looks nice (except I had some issue with adhesion, solved with higher bed temp).

Maybe it will work better if the inner wall and outer wall becomes thicker? Maybe I am wrong because the ball will be less smooth?

Simple design, work perfectly. I adjusted the sparse infill to fit my desiccant size.

Very nice. Only the opening can be a bit larger, with the uniform shaped opening, you need to slowly draw a piece to prevent pulling apart. One negative rhomboid cylinder in the middle will do the work.

Printed using PLA, also usable. But I did reduce the layer of the strip from 4 to 2 using negative cubes so it is more flexible.

As shown. The only thing is that I find it difficult to slide in to the same slot on both sides. Not a big issue ;-)

My first labware print. Changed the hole to 17.5 to fit our tubes.

I cut the large rack open and made a connector. Printed with support, finished nicely.