Recently our X1C started slamming into the chute flapper while trying to home at the start of a print. I’m not sure what is causing this but this is what it does on loop. I’m not finding any articles on this problem.
There is no error and it will just keep doing it if I don’t stop the print.
I have this EXACT same problem. Try a power cycle and calibration does not make any difference. After homing loop for about 10 times, it started to print. However, after filament change and homing, the stop and starting point were shifted by about (3,3) causing a misalign. I will try to open a ticket to BL.
I’ve found a solution. Disable “Auto-Recover from Step loss” in Print Options seems to solve this problem entirely. No layer shift after color change as well.
I have this same issue of banging into poop chute. Previously had installed a PTFE guide mod that looks similar. Used for a couple weeks no issue. Banging came suddenly one days. Your simple solution of removing the PTFE guide magically solved it. Curious to know why it causes this issue thought gh.