What causes x-axis shift

[Rpmaguire 0]

what could be causing this shifting in the layers?

ive never had this happen before...

 

is this a slicer / code malfunction ? 
 

trying to find a solution, not too sure where to start though.  Everything looks fine in cura preview with the print layers

 

I’ll try to re-export the model as obj and see if anything changes

[geert_2 485]

It is not clear from your photos, but it looks like the part came off the glass bed, and started sliding around? If yes, the problem could be your bonding method (or the lack of, or you forgot to use one), or a bed height leveling problem?

 

If the model would still be stuck to the glass at this point, then maybe you have loose pulleys somewhere, maybe on one of the stepper motors? Or maybe something hit the printhead while printing (cat, dog, kid,...?), causing it to skip steps? Or printing too fast for your stepper motors, so it could not follow and skipped steps?

 

I guess it must be something along these lines...

 

[Rpmaguire 0]

You were right Geert_2!

 

the left stepper motor bolts became sightly lose.  The belt was loose and the speed was causing the teeth to skip and causing the print to shift...

tightened it up and all good

 

thanks again

Edited February 25 by Rpmaguire