I printed with Inland black PETG, 90% infill, and _ON ITS SIDE_ as shown, to align the strongest flow of the layers with the little pins that usually break off. Printed on my reinforced Creality Ender5 Pro, with borosilicate glass base, hair spray, sliced with Cura, support everywhere. Modeled in Lightwave 3D 2015. Will need a careful trim out from the support material, so you don't break anything. Pretty happy with the way this came out. Will reprint if I ever buy some grey PETG.