This is a simple "bubbler" style dual-chamber airlock for home brewing.

Note: still having trouble with getting prints to reliably hold liquid. I'm pretty sure it'll work if I print in PETG, but with PLA it's giving me trouble.

Update 2017-09-10: a new cider season is here so I've had a chance to do more testing and tweaking. Adjusted the model a bit for a "flatter" shape and tested with PETG. So far, natural PETG with 5 perimeters and 6 top layers at 50% infill seems to be holding up to primary fermentation pressures. YMMV.

Print Settings

Printer Brand:

RepRap

Printer:

Rafts:

No

Supports:

Resolution:

0.2mm

Infill:

Notes:

Natural PLA. Use at least 5 perimeters, and print the airlock upside down with 5-6 top layers to ensure the bottom holds liquid.

Category: Kitchen & Dining