Simulation of Pre processing for 3D printing

1. The motive behind _____ a 3D model is to transform the model into guidelines for the 3D printer
2. By which preprocessing, we can print the object vertically upward, vertically downward and in horizontal plane.
3. _________ helps in to improve the printed surface quality, shape accuracy and infill distribution quality
4. First step in pre-processing is
5. _____________ are required where the objects are unable to get printed directly