I have scratch built a 4" Nike Smoke with a 3D printed PETG nose cone. It has flown twice; the first time was a lawn dart, and the second was successful. However, on the successful flight, the nose cone broke in two upon landing. How could I strengthen the nose cone against this? (For reference, it was printed vertically, 0% infill, 1.6mm wall thickness.) I am already thinking that angling it in the slicer would be a good idea, so the layer lines are not oriented along the direction of force. Would that work? Is there more I should do?