Parametrized longboard wall hang. Strong and sturdy. Included .stl and .gcode files are for a longboard with 70mm wheel diameter, 60mm wheel width and 225mm truck width (wheel center to wheel center). 

Fusion 360 file included to change parameters. File is a bit of a mess…. Sorry about that… It was my first design ever. 

.gcode files are for PLA, which works great for me. PETG should work well too.