Hello, what causes double lines showed on the picture and how to avoid them? The machine is TwoTrees T2 with autofokus.
My guess is that you are running over the same area more than once and you have some play in your machine that needs to be addressed.
I guess it could be a play or vibration but I can’t sense any to be honest. I will check the guide, though. Thank you for the advice and wish you a nice day.