When slicing a 3D model with supports for beginners, the key steps are importing the model, enabling supports, adjusting basic parameters, previewing, and exporting G-code.
Import your STL/OBJ file into slicing software (e.g., Cura, PrusaSlicer). Turn on the "Supports" checkbox—this is usually in the main settings. Set density to 10-20% (balances strength and easy removal) and keep the overhang threshold at 45° (covers most overhangs by default).
Use the software’s preview to check if supports cover tricky areas without excess. If unsure, start with your printer’s default support settings—try the "overhang visualization" tool to see exactly where supports will go, avoiding waste.
Export the G-code once you’re satisfied—that’s the file your printer needs to print with supports.