Toilet Paper Tube Connectors

For our Make It 101 class, we needed to make a project where we used everyday readily available materials to make a connector set. I used toilet and napkin paper tubes as my "connectors." I designed two different parts and used them to make a pyramid type of thing. In the instructions, I mention another part: a smaller connector tube. That part can be replaced by the regular tube connector. Both the parts can be printed with ABS or PLA. For both of these parts, I did not use support, so the part