Fig. 4
From: Material characterization and selection for 3D-printed spine models
Red represents all force vectors while blue represents moments in counter-clockwise direction. F denotes force, M denotes moment, and x, y, and z denote the coordinate plane/direction. Motors are colored in black, bur and its 3DP holder in light blue, specimen in white supplanted within a cup held by bottom motor. Black arrow to the left of the bur tip indicates the direction the bur sweeps while the specimen remains immovable, clamped within a cup fixated on the bottom motor. Load cells are housed within the top and bottom motors