I use Blender instead of AoI, as a modeling tool. I had given Nophead a suggestion that he might want to look into Blender a bit more in depth when he found some bugs with AoI. I am not positive that Blender would resolve his situation, boolean operations on Blender bring my machine to a standstill for several minutes on complex meshes.
In any case, here is what I found, using the extruder 1.0.3 files on source forge:
- blender native unit = 1.0 mm
- normals point outward (not sure if this is necessary?)
- orientation does not seem consistant
XY: gearbox-fringe, gearbox-output-coupling, gearbox-motor-coupling, gearbox-bracket, gearbox-housing
YZ: quickfit-clamp, clamp, offset-motor-holder (?)
XZ: poly-holder, screw-holder,
?: offset-drive-coupling (Seems on a diagonal)
standard STL import / export appears to work without any problems, assuming you use the 1mm units. as noted above.