Graduated cylinder bumper

thingiverse

Bumper/protector for 10 mL graduated cylinders in a high school lab. Sized for Pyrex 3022 and 3075 cylinders, about 13 mm diameter. Printed on a FlashForge Creator Pro 2, 0.4 mm nozzle using Ataraxia Art Flexible PLA+ filament. I used a raft of standard PLA because the heated plate ruins the dimensional stability of the flexible filament, and the build is almost impossible to remove from the plate without the raft. I used 75% hexagon infill to provide enough strength for the bumper to do its job. The bumpers worked well in initial testing. We'll see if any of the chemicals we use will attack the plastic, but the amount of filament they use means we can easily replace them fairly often.