This is the very first version of the Piper 2 printer. It is released in 4 sub versions:
- US version for printing bed up to 500x500mm uses 1/2 EMT conduits or pipes with OD 18mm – https://www.thingiverse.com/thing:3022836
- Upgrade for US version to go beyond 500mm limit – https://www.thingiverse.com/thing:3051204
- UK or 20mm EMT conduit version – https://www.thingiverse.com/thing:3036472
- Upgrade of UK version for printing bed above 500mm – https://www.thingiverse.com/thing:3058435