Calibrate extruder 3D models

PrintrBot Extruder Measurement Tool

Large calibration square

Cubo 20mm calibración.

Dual Head Calibrate

perimeter_wt - Slic3r friendly

Calibration block - 123

2 Minute Build Plate Leveling Print

Skeinforge Bridge Calibration Cube

Printable Gauge to set the plate - for Prusa Mend...

Hotend 3DA-002 - FreeCAD, STEP / IGES

Q*Extruder V2 -

Saintflint Extruder