10. before starting a print

Before you start a print, a few things need to be inspected.

• Printing surface is placed on the print bed
• Bed is empty
  Make sure there is nothing on the printing surface (for example another printed object)
• Bed is clean
  If the printing surface is dirty (dust, grease, etc), the extruded material will not stick to the surface. Inspect that the surface is clean. For more information, see section 14.1.
• Enough filament
  Open the filament chamber and verify that there is enough filament left on the spool.
• Clean nozzle
  From the previous usage, there might be material stuck to the nozzle of the print head. If this is the case, remove it with tweezers. For more information, see Maintenance section 14.2