3D Warhorse PLA+
Most of the pieces were designed to not need supports. The only notable pieces that need supports are the hinges that should be printed in the upright position from the .STL.
All pieces should be printed in the orientation they are found in the .STL. I have designed the pieces to minimize warping and to minimize the need for supports.
I printed everything at 100% infill because I'm a monster. Your results may vary.