Perfect ant keeping test tube

The perfeck size test tube setup. It does not roll and unless you print it in clear plastic it has no light shining through is which means that the test tube is stress fre for the queen(unless you check on her every five minutes).YOU NEED TO PRINT IN AQUARIUM SAFE PLA OR THE QUEEN WILL DIE. If you don't do this (especialy with filaments that require a cover to be safely used) the printed item will release small amounts of noxious fumes and that will kill the queen in a few hours and if taken out