Why did my steppers suddenly going backwards and nozzle start scraping the bed on a subsequent print?

[EddyMI3D]

Can you share the file you wanted to print?

@machinist

Also, is there any info repo available for instructions on how to read and understand the log file in order to troubleshoot myself?

How-To Trouble-Shoot

How-To Troubleshooting The following is a collection of general troubleshooting tips. These should be followed before posting a Request for Help Basic Troubleshooting Connection Problems to the Printer Board Linux dmesg Works when cold, but stops working when hot or moving Note: Approximately 50% of typical problems are due to the items discussed below. Another 49.8% are configuration problems The last 0.2% could be either bugs or are just designed as is. Basic Troubleshooting Check your …

Advanced Trouble-Shooting / Graphing Klipper

Advanced Trouble-Shooting / Graphing Klipper The klippy.log is key for trouble-shooting and diagnosing errors, containing an abundance of information and also low-level details. In Klipper’s tool-box are additional tools to facilitate such a diagnosis. They are often targeted at developers with an in-depth knowledge about Klipper’s internal working, but the graphstats.py tool is also very valuable to diagnose common errors. General Idea Sharp spikes in such graphs in one or the other direct…

BTW: The homing speed for X and Y is way too fast. Default is 5 mm/s. You should not exceed 20 mm/s. Homing is a precision process and should not be done with a sledge hammer.