Thingiverse
PET bottle cap for helmets with a cage
by frankieknarf
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when using helmets with a cage in front of it, it often is difficult to drink. This bottlecap that fits onto standard PET bottles should fix that problem. (European bottle, don't know if there's a difference with bottles from other regions).
After some prints, I found flexible filament more suitable for the job, since it wont break as fast.
Update: V5 is a tiny bit thicker
After some prints, I found flexible filament more suitable for the job, since it wont break as fast.
Update: V5 is a tiny bit thicker
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