Dimensional accuracy calibration box test

thingiverse

Because dimensional accuracy is a difficult balance between the printer motors precision, the filament and the slicer settings I design this test to help calibrate my printer as fast as possible with a quick print. This is a ~15min print test and with it you can measure : - DIMENSIONAL PRECISION IN THE XYZ AXIS - box size is 20x20x15mm - bottom hole and corresponding circular peace is 10mm diameter ( 0 tolerance ) - side square hole and corresponding peace is 6x6mm ( 0 tolerance ) - side circular hole is 6mm diameter - FLOW PRECISION - box wall is 0.8mm ( best size to test 0.4mm nozzles ) - HORIZONTAL EXPANSION AND HOLES EXPANSION - this is great to find the balance between horizontal and hole expansion in Cura - if the box has the expected 20x20mm and the circular peace perfectly fit the hole then your horizontal expansion is perfect - VERTICAL HOLES PRECISION - this test is best fit to tune your Z axis My inspiration for my design : https://www.thingiverse.com/thing:3535060 https://www.thingiverse.com/thing:3220015 Enjoy and post your results! <p> </p> <i>If you found my Things useful, treat me to a cup of coffee :)</i> <form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_blank"> <input type="hidden" name="cmd" value="_s-xclick" /> <input type="hidden" name="hosted_button_id" value="GB5KAG9NLL334" /> <input type="hidden" name="on0" value="Donation 4641874"> <img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif" /> <input type="submit" name="submit" alt="Donate with PayPal button" value="TIP WITH PAYPAL DONATION" class="button button-primary"> <img alt="" border="0" src="https://www.paypal.com/en_PT/i/scr/pixel.gif" width="1" height="1" /> </form> <p></p>