Tractor Seat guitar accessory (Mad Max, Doof Warrior)

This is part of the Doof Warrior guitar (yes, the body of the guitar is indeed a bedpan in the movie). It looks like a tractor seat but I'm pretty sure it isn't actually. Provided in a thin STL (rescale Z to desired size) if you want to 3d print, and a couple vector formats for laser cutting/paper-template/etc. One of the SVGs is already split up for US Letter printout. The black boxes are for printer calibration. One is 1"x1" and the other is 5"x0.5".

Me? I decided to use a sheet of aluminum