Trade show pop up display light mount

This is a two piece arm for mounting lights to a pop-up display that we use for trade shows. I couldn't find any lights that were made specifically for the display for a reasonable price so I printed these arm parts to mount a $30 set of lights from Home Depot (http://www.homedepot.com/p/Commercial-Electric-3-Light-LED-Black-Puck-Light-21353NKIT-BK/205667978) and used some thumbscrews from McMaster (https://www.mcmaster.com/#91185a426/=16o1e7y) with standard cap screws to tie the two pieces toge