Standard Airline Tubing Hose Barb - External Threads
thingiverse
Working on a project based off of Grant Thompson's HHO generator. I needed some hose barbs to funnel gas to a bubbler. Couldn't find any that fit for my purposes at the hardware store so I made my own. Got inspiration from this: [M8x1.25 Thread to 3/16 Hose Barb Fitting](https://www.thingiverse.com/thing:2540860) It's a standard hose barb design, but I needed one with different specifications. * External threads to make installation and future tightening easier. * Longer threads to use two M8 nuts for stability. * Thinner hose barb. I don't know if the standard airline tubing I got from Walmart is thinner or what, but the 3/16" did not fit. The hose barb I made is thinner at 4mm end diameter and 4.6mm barb diameter. So far I've cut washers from thin craft foam sheets to create a seal until I can find some appropiately sized O-rings. It's sealing fine so far. I've found the best way to seal is to put a dab of silicone I around the bottom of the threads and then pressing lightly to your hole. This basically forms a great O-ring. Silicone doesn't truly stick to most things so it's removable in the future.
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