Sodastream Crystal cap

Features:

• Prints in one part
• Fits on glas bottles (Sodastream crystal)
• Easy on your printer

Printing:

Print it with at least 4-6 perimeters (with 0.4 nozzle). If you have a 0.6, then 3 perimeters might also be enough. 

A broad band of layer hights from 0.2-0.35 (0.6 nozzle) and 0.15-0.25 (0.4 nozzle) will work for all parts.

Did some testing, regarding the material. ABS, PETG and also PLA seemed to work just fine. But i recommend using ABS and PETG for better cleaning capability. If the cap is intended to be used only a short time ( like for one dinner or party only) PLA might be fine also.

Print the gasket part with this many outer perimeters untill you are left with only walls and no infill. This requires FLEX filament of course. If your filament is to hard to be used as soft seal, use concentric infill, only 2-3 perimeters and 2-3 top/bottom layers. you might have to do some testing.

If you are looking for additional designs, feel free so see the other bottle caps. They will fit the plastic bottles also

https://www.printables.com/de/model/388979-sodastream-lid-for-plastic-and-glass-bottles

Note:

Because the nature of FDM prints, the parts feature grooves which are probably the worst thing to have on any food/drink related equipment. This is due to the massively increased surface area. Therefore it is harder to clean and generally loved by any type of bacteria. I use the caps mostly for pure carbonated water without drinking from the bottle directly. Since i clean them every now and then, i did not have any problems so far.