Kappe für Ernesto- bzw. Culinario-Kunstofftrinkflasche 700 ml

thingiverse

No big deal; just a cap for Ernesto's affordable drinking flasks 700ml. After my drinking flask kept spilling out multiple times (filled with coffee!), I had had enough and quickly created an overcap using tinkercad. To my surprise, it worked perfectly the first time; the small lip at the bottom keeps the cap securely on the flask, and the closure ring is pressed down tightly. Removing the cap requires a bit of effort, but it's manageable. I printed it with my i3 mega 3D printer and Sainsmart TPU filament with Shore hardness 95A (about as hard as a shoe sole). I was able to process it fairly well despite using a bowden extruder. The filament should be flexible; otherwise, the cap would likely get stuck on the flask. Of course, this part doesn't have to be so big; a simple clip that presses down the closure ring might suffice. But I was too lazy :). If anyone actually wants to print this design, compare it with the drinking flask's opening mechanism (see photo) first. Apparently, there are different versions. Also, double-check the measurements to ensure they're reasonable or if the flask design has changed. And before printing, please reverse the orientation :).