the rook test piece —
Founded the rook test piece models & stl files for printing
Thorinair
Nemo
JuanCallon
Dylan Klaver
sbuerger
EngineGeek21
porlock
Breaks'n'Makes
JMakes3D
LMaker
3D-Muc
SteveGotthardt
Raynus
Mrrypstra
thenerdyreview
Cutwow
HYDRA-MFG
ReddeathMX
ellipticaloptician
GoPrint