[PREFACE: The photographed shelf holder is wider than the uploaded model. The uploaded model matches the manufacturer's specs and has 2 fewer columns of hexes. I widened my Series X to fit wider spools so my shelf is also wider.]
I designed this holder with hexagons on the bottom to lighten the filament usage and give me access to the EIBOS in two orientations: (1) temp knob facing the ground and (2) power switch facing the ground.
Print information:
The author hasn't provided the model origin yet.