Common resin-based 3D printers can't create glass, so a water pipe produced from these templates wouldn't be entirely print-n-toke, but most appear to be ready to go as soon as glass pipes are added.

Scientists at the University of Washington have re-created the distinctive spiral shapes of shark intestines in 3D-printed pipes in order to study the unique fluid flow inside the spirals.

Honest’s Capsule Water Pipe is everything a bong should be and more ... little more than a laboratory beaker and others that zig-zag like they glitched in the 3D printer. The Honest Capsule, by ...

but [Tommy] found that using a light pipe or diffuser can integrate better with a device, especially when the device itself is mostly 3D printed in the first place. Infill has an effect on appearance.