Need a way to protect the lens of my Gopro while using it for FPV flying with a Tricopter. The lens had previously scratch due to rough use and was a pain to change out the lens. All you need to finish this is a few servo screws and the lens from Welder Mask. The plastic is clear and strong on those replacement welder mask lens.infill 30% layer 0.20mm shell 3 no raft/support Used ABS Heatbed 120'C