test tube rack for queen ants

thingiverse

A stackable rack for holding test tubes with queen ants starting their colony. The test tubes should be 14x180mm and can be found in most supermarkets (at least where I live). The racks are infinitely stackable but the cover can only house 2 racks, so try to put them in a dark spot. The racks hold 6 tubes each and the cover has small holes to allow air to pass through. no supports required:)