Ant Formicarium Connector into 15mm

This is the connector to turn the Ant formicarium into 15mm, I did this so that I wouldn't break the formicarium and force something into it, and would instead break the connector if needed. This should be ant proof, as I've been using it for a year, but I still suggest putting some cotton to keep tension, like everything else. Please let me know of any errors or modifications you would like for me to do.
Thank you for downloading, enjoy!

This works for all ants species. This is made for my Ant series, 15mm tubes and 100x100 plexiglass tops

PUT TAPE ON THE COVER TO SEAL PROPERLY OR SOMETHING ELSE!! Prevent leaks before they happen

Please like, download, and comment! I spend hours on each design, and I print each and every single one. When they don't work and you don't let me know, or they do and you don't like, it lowers my chance of knowing how you guys feel and makes my future designs less likely to be very good. Thank you