About this 3D model

This is the bottle cap holder I am working with, at the moment it is just a test for checking thingiverse. The idea is to use bottle caps and screw from bottles, so there is no need to print it another time, so I make a joint for the botthe wich drill the top and other one wich holds the thread where the bottle cap would be mounted. It works on this model, but I will make more clear the idea with some time