Layer shift, physical contact

[fallow moon]

Hi, well today’s problem is something mechanical I think. I heard one of these hit something but no idea what it was. Happening at random heights

I can move X,Y, and Z and I can find any issues. It all moves well.

Any suggestions?

[cunning ruin]

would be wanting to know your belt tension is good, and that you had checked your motor pulley grub screws were still tight, to start with

[fallow moon]

yes, belt tension is good and even. grub screws and pulleys are are all rock solid. I am at a total loss abut this... it is starting to happen at a somewhat consistent level so that may help eventually

[cunning ruin]

can you upload a klippy log in case there are some clues in there?

[white vine]

what does "belt tension is good" mean? what method did you use to tension the belts?

[fallow moon]

using a Diyshift GT2 belt tension meter. all the belts are set to the middle of the recommended range in their instructions.

And last nights test prints worked fine...... aaaaahhhhhhhhhhhh