bong seal
thingiverse
This part can be used for a diy bong. You need a stainless steel bong spear (9mm tube) and a glass bottle. Use a diamond cutter or a dremel to drill or grind an appropriate hole into the bottle. Then seal the gap between spear and glass with this seal. Print with TPU, no supports required.
Download Model from thingiverse
With this file you will be able to print bong seal with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on bong seal.