Aquarium Airline Tube Restrictor
thingiverse
Aquarium airline restrictor to slow or cut off the flow of air from air pumps, useful for: - Brine shrimp hatching - Raising fish fry - Drip acclimating - Slowing sponge filter flow - Etc. Prints without supports. Sized for 6mm O.D. airline tubing and provided in two styles (I recommend the airline restrictor and wing bolt files for ease of use). I printed and used MikeyWires' file (https://www.thingiverse.com/thing:2144242) but was having trouble getting it to print reliably, so I designed this one from scratch to fit my needs. This shouldn't come into contact with aquarium water, so any filament should work. However, I do recommend using either PETG or ABS long term for mechanical durability.
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