UM2 layer shift and Homing limit switch fail

[braddock 1]

Hi guys, I came home tonight to find a couple of issues.

Firstly, dreaded layer shift. Parts are still stuck firmly to the bed, but the print has shifted about 8mm back in Y

This has happened before, but I still haven't found the cause for it.

Also, watch the video, the head isn't stopping when being homed all of a sudden.

I can make the switch "click" if I manipulate it with long nosed pliers, but the head just wont trigger it, I've tried bending the tab out, but to no avail.

Any ideas on either issue would be great.

Cheers.

 

 

 

[braddock 1]

I just noticed my fan shroud was bent out, hitting the side cover before the limit switch can trigger. Bent it back and its ok now.

What would have caused the shroud to bend though? it was fine this morning.

 

 

[illuminarti 18]

I think it's all the same problem... Perhaps an overhanging part of your print curled/blobbed enough to catch on the print head, bending the fan and causing skipped steps at the same time?

[braddock 1]

I guess so, must have bee quite a lot of load on the motors if it stalled / hung it up enough to cause such a shift. It's printing fine now though.

I thought I was being a bit ambitious printing 4 parts at once.

 

 

I think it's all the same problem... Perhaps an overhanging part of your print curled/blobbed enough to catch on the print head, bending the fan and causing skipped steps at the same time?

 

[fingerpuk 0]

Whatever it is you are prating it looks good

Are you a ZBrush user? I've been playing with mud box and am really liking it, I like ZBrush but the interface is confusing for a long time Maya user.