Coffee Cold Brew Filter Funnel for PET Bottles

thingiverse

I'm continually refining this, files are subject to revision! Cold brew coffee is my absolute favorite, that's why I enjoy creating large designs and storing the finished coffee in PET bottles. Cold brew coffee needs to be filtered, which is why I was searching for coffee funnels with filters. Unfortunately, I couldn't find one that met all my requirements, so I came up with my own solution. Features V2: - Compatible with common coffee filters (e.g., 1x4). - Built-in PCO1881 thread for PET bottle. - Built-in air vent to allow air escaping from the bottle while filtering. - Special spacers to improve filter flow. - Built-in insulation based on infill and air. - No o-ring or tight seal required due to built-in bottle funnel. - Designed specifically for 3D printing. Features V3: - All Features of V2. - Re-designed air-vent so that it becomes an auto-stop once liquid level in bottle reaches bottom of funnel (UNTESTED!). Features V4: - Much bigger but less spacers for improved flow. Target is to filter as quickly as possible, which is ideal for cold coffee that has been soaking beforehand. - Bigger air vent. - Don't expect auto stop to work! Features V5 (RECOMMENDED): - Improved spacers in center for better flow. - Adjusted angles and surface on bottom for better printing. - Improved air vent (might not be needed due to big spacers at all). Thanks to @terahurts for the thread definition! https://www.thingiverse.com/thing:2693686