Piper 4 or Piper Infinity is an infinite Z 3d printer
planned to be released in June of 2019. It is currently in beta testing. was released in June of 2019 check https://www.thingiverse.com/thing:3711685.
.The unique design is based on Piper 2 gantry, which is placed 45 degrees to the belt and angled extruder 67.5 degrees to the belt (not a usual solution, which would have been 45 degrees to the belt) to combine simplicity and ease o
Early pictures of Fusion 360 assemblies: Working Piper Infinity:
Drawings from design: