3D Printing Quickstart

Assumed audience

• Reading level: general adult.
• Background: no engineering required.
• Goal: print a simple object safely.

What you need

• An FDM 3D printer.
• PLA filament.
• Slicer software.
• A simple model file (STL).

Steps

1. Load filament and preheat the nozzle.
2. Open the model in your slicer.
3. Choose a basic profile (0.2 mm layer height, 20 percent infill).
4. Slice and export gcode.
5. Start the print and watch the first layer.

First-layer checklist

• The filament should stick without gaps.
• Lines should touch, not be separated.
• If the first layer fails, stop and re-level the bed.

After the print

• Let the part cool before removal.
• Clean edges with a knife or sandpaper if needed.

Safety and hazards

• Avoid printing small parts for children unless they are labeled as choking hazards.
• If a part is a choking hazard, emboss a warning on the part or include it in packaging notes.