Ball Jar Inverted Aquarium

Update:

• Made the neck longer for an easier time screwing the jar on and off

• Widened the neck so that it rests on the build plate during printing

• Cleaned up the CAD

Hang-on-back inverted aquarium that uses a wide mouthed ball jar.

Since mine is going to live outside, I printed in PCTG for the extra UV resistance over PETG and PLA, but the PLA prototypes I printed out held up just fine under the weight, and would probably be totally ok if used indoors.

Your fish will probably be afraid to go up into the jar at first. To get mine to be comfortable getting into it, I had to put floating food into the jar, and leave it there until some of them got brave enough to go up for the food.

We use a husky storage tote for an outdoor aquarium, and designed this to add an inverted aquarium feature to it.

By default, the HOB feature is 45mm, which is rather wide for most fish tanks, but I've included the STEP file if you want to edit it.

You will need supports to print this successfully!

Leave the part oriented up-and-down, and support the bottom of the threads. This way, you'll the the layer lines perpendicular to where most of the forces are going to be applied to the part. The threads are big an chunky enough to survive being supported like this no problem