Although obviously it does not do much, it actually fits a joint, and if filled with a little amount of water, it will actually percolate, making this a pretty cool party trick!
The keychain hole is 5mm, so if you wish to scale the model down because you just like the looks of it and don't want the functionality, keep that in mind.
This newer version is a slight optimization of the v2 keychain!
As a lot of people mentioned and requested, I made some changes to the intake: it is now wider so that fatter joints can be used as well, as people mentioned that unfortunately prerolls would not fit usually. Although of this change, the end of the intake is still as before, so all joints should fit nicely, as it shrinks on the way down. Lastly, I slightly changed its angle as I did not like how straight up in your face it was tilted.
Less important i changed the way the logo is handled as a file in the STL: the keychain is now an assemby with separate logo and keychain, so that if desired it can not be printed from bambu studio by setting both objects at the same color, or it can be removed to make an engraved effect similar to v2.
PLEASE NOTE
This model is quite intricate: the columns supporting the percolator are really tiny, but even if they don't resist during printing the outcome should be functional and look the same (this is NOT a problem for bambus).
Smoking is really hazardous. Especially from unsafe plastics. That is why I highly recommend you to print this in PETG if you ever think about using it even once, as bacteria has a harder time sticking to it and usually filament brands provide waterproof PETG, which makes it harder for the bad stuff to stick in.