@AndreInPortland : I'm intrigued by your 3D printed masthead bracket. I have a couple small tasks that call for custom parts, and my daughter wants to learn modeling + printing, so I think I may jump in. Definitely starting with non-structural bits...
What material(s) did you print with? Has your bracket held up well for a couple seasons of UV? My initial impression is that PETG is probably the best material choice, but I have very low confidence in my judgment here... Any advice to pass on?