The author remixed this model.
This remix is a total redesign to use a one-piece shell for printing on larger printers. The STL files have the same pixel spacing as the original. Included are some jigs for bending wires to the right length and a fixture for holding two LEDs at the right spacing for soldering.
For my build I'm using the following LEDs - full testing TBD https://www.amazon.com/dp/B09FSTT43H?ref=ppx_yo2ov_dt_b_fed_asin_title