Male and Female stoppers for modular formicarium (Caswal model)

I love the formicariums' designs of caswal, but I have modified the original stoppers and created these ones because depending how you print the pieces, some of them may result too loose, and when you take the formicarium in your hands, some pieces may fall down.
With the little modification that I added, you will avoid it.

If you get very precise pieces with your printer configuration, you will not have problems with the original model.
You can find it here: http://www.thingiverse.com/thi