Do not touch the extruder tip during Dremel 3D20 operation or until it has cooled down to 60C (140F). Contact with the extruder tip during or after operation before tip has cooled may result in personal injury. CAUTION: Before every build make sure that the build platform is covered with Dremel specified build tape. Use of improper build tape may result in equipment damage and poor object build quality.
It is important you level the build platform every time you replace the build tape or reinstall the build platform to ensure that the build platform is evenly spaced from the extruder head. Make sure to remove any air bubbles from between the build platform and the build tape. Not leveling the build platform or eliminating air bubbles may cause objects to not build properly.