Small Formicarium
thingiverse
Uses standard airline tubing for the entrances (one on each side), so this won't be usable for large ant species such as Camponotus. I used the plastic from a 1 dollar IKEA picture frame for the clear part. While you can't see them in the picture, there are very tiny holes at the bottom of the nest. These holes increase in number towards the lower end, creating a moisture gradient. Formicarium measures 4 inches wide. Printable on the Monoprice Mini. I printed the Base with 100% infill to ensure that water wouldn't leak through (a problem I had with an earlier design).
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