Free
It's free to download
Videos
Images
Documentation
Technical
Materials:
PLA/ABS filament
Silicone Caulk
Ecoflex silicone (Any type will do, I used 00-50)
Small zip-tie
1/4" barbed connector OR 1/8" tubing
Tools:
Clamp
Cup
Spoon
Flush snips
3D printer
Screwdriver
Vacuum source (you can use a designated vacuum pump or just your mouth)
Free