Safety Checklist for 3D Printing

Complete this checklist before each printing session to maintain a safe workspace.

Pre-Print Setup

• Work Area Clear

  • Clear desk/table of unnecessary items
  • Remove tripping hazards around printer
  • Ensure adequate ventilation around the printer

• Printer Inspection

  • Check nozzle is clean (no old filament residue)
  • Verify build plate is level
  • Confirm heated bed temperature sensor attached
  • Check all cables are secure and not frayed

• Filament Preparation

  • Filament spool rotates freely (no binding)
  • Filament path clear of obstructions
  • Extruder drive gear clean (not clogged with plastic)
  • New filament loaded correctly

• Environmental Conditions

  • Room temperature adequate (18-25C ideal)
  • No direct drafts from windows/AC on printer
  • Humidity levels reasonable (not extremely dry)
  • Adequate lighting to see printer clearly

During Print

• First Layer Monitoring

  • Watch first 2-3 layers closely
  • Check bed adhesion (not too loose or tight)
  • Confirm nozzle temperature stable
  • Monitor for any unusual sounds

• Regular Checks

  • Check print every 15-30 minutes initially
  • Verify filament is feeding smoothly
  • Listen for grinding or skipping noises
  • Watch for layer shifting or warping

• Temperature Stability

  • Heated bed maintains consistent temperature
  • Nozzle temperature doesn’t fluctuate
  • No thermal runaway warnings

Safety Alerts

• STOP Print Immediately If
  • Nozzle jams or extrudes unevenly
  • Filament completely stops feeding
  • Burning smell detected
  • Visible layer shifting
  • Extruder grinding or skipping sounds
  • Any unusual smells (especially chemical/burning)
  • Power indicators show failure

Post-Print

• Cool Down Period

  • Allow heated bed to cool naturally (10-15 min)
  • Keep hands clear until nozzle cools
  • Verify printer is idle before touching

• Print Removal

  • Use proper tools (spatula/scraper)
  • Remove print when bed fully cooled
  • Inspect print for defects or sharp edges
  • Sand sharp edges if necessary

• Equipment Cleaning

  • Wipe nozzle with brass wire when cooled
  • Remove any plastic debris from build plate
  • Check extruder for filament residue
  • Clean any visible dust from electronics

• Workspace Cleanup

  • Return tools to proper storage
  • Dispose of support material safely
  • Tidy workspace and verify clear pathways
  • Store filament properly in dry location

Hazard Awareness

Hot Surfaces:

• Nozzle reaches 200-250C
• Bed reaches 60-100C
• Allow adequate cooling time before touching

Filament Hazards:

• Tangled filament can jam printer
• Always keep filament spool free-spinning
• Check for knots or kinks before printing

Electrical Safety:

• Never operate with wet hands
• Keep liquids away from printer
• Unplug before major maintenance
• Verify power supply is grounded

Material Hazards:

• Some filaments emit fumes when heated
• Ensure adequate ventilation
• Use HEPA filter if printing indoors
• Dispose of failed prints properly

Emergency Contacts

• Printer Fire: Unplug immediately, use dry chemical extinguisher (NOT water)
• Burns: Rinse with cool water for 15+ minutes
• Inhalation Issues: Move to fresh air, seek medical attention if symptoms persist

Last Reviewed: _______________
Reviewed By: _______________
Notes: ________________________________________________