The file '81:1 Gearbox 1.0 3D Printer Model' is (stl,blend) file type, size is 223.0KB.
If I'm measuring things right, this gear box should print at this size AND the gears should mesh.
The motor is the same motor from the old shape library:
allelectronics.com/make-a-store/item/DCM-296/SMALL-DC-MOTOR-MABUCHI/1.html
gearbox_07_3_1_rome.stl | 97.3KB | |
gearbox_07_box_bottom.stl | 25.9KB | |
gearbox_07_box_top.stl | 25.5KB | |
gearbox_07_motor_clip.stl | 8.5KB | |
gearbox_07_output.stl | 90.7KB | |
gearbox_07_pinion.stl | 22.0KB | |
shapelib_gearbox_07.blend | 539.6KB |