Cupholder for Tube and Tabletop Edges

As part of a project with the Plano Green Team (a Solar Car Designing Team), I created a simplistic custom cupholder designed to latch onto a 20-25mm (0.79-0.98 inches) wide tube and hold a cup. When testing out the cupholder, I found out that it also worked on holding cups on the edges of tables, a niche but beneficial use of the cupholder. I created both a "large" and "small" version of the cupholder depending on the desired cup diameter being used, being 4" and 2.5" respectively.