Teaching Tech 3D Printer Calibration

Flow

• Slicer Flow Calibration

• You cannot calibrate the flow on first layer aspect since it is correlated with Z-offset - see Elefant Foot.
• Flow can be assessed on upper layer aspect.

Elephant Foot

• Set Z-offset properly first.

• Adjust Initial Layer Horizontal Expansion
• How to STOP Elephant’s Foot on your 3D Prints

Hole & horizontal expansion

This Not the same as Shrinkage Compensation

• Horizontal Hole Tolerance Calibration Test

Accurate Dimension

• How to 3D Print Dimensionally Accurate Parts
  • overextrusion / underextrusion should not displace center - as well as horizongal expansion
  • filament shrinkage, can account for 0.6% measurement innaccuracy - can be calibrated on specific print to reach expected dimension.
• A Better Way To Calibrate Your 3D Printer. Importance of Dimensionally Accurate 3D Printed Products - 20 mm cube are within a range of 0.3% precision on an ender3 => goto a 100mm test print
  • 100mm Calibration Print

Wall ordering

• Why your 3d printed stuff doesn’t fit together and how to fix it! - if interior wall is printed first, it will push away the external wall.

Clearance & Tolerance

Corner

FDM does not make perfect corner

• pressure advance may help

Test

• Can you Conquer the Clearance Castle?
  • 0.5, 0.3, 0.15 clearance test