A nice free calibration tool....

http://retractioncalibration.com/?fbclid=IwAR0_VafP2tnm9Jd6_4P-pEbklFk2VJE4AvdIRudTnVHZUx7IlqnswX3_CZ4

What results have you obtained using this tool (I wish the site let you add start and end gcode, like TeachingTech’s site)? I tried it and the results were ambiguous. It might be my printers tho.

Thanks!

An interesting project. My 1st thought was “that’s a lot of retraction!”. :slight_smile: