The author remixed this model.
I redesigned the clamp system slightly, by removing the threaded portion so it can be printed flat on the bed along with the clamp itself to then be printed at an angle so as to avoid the need to use supports when printing. Also added a small flat “washer” to the screw top so that it was likely to avoid digging into the surface its being clamped to and also allowing more surface area to clamp down as well. The cup holding parts that would slide into the clamp are still the same ones from the original model.