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z axis lower end stop


jameshs
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Posted · z axis lower end stop

UM original

A strange one.

a) does the z axis have a lower end stop switch and

b) something strange happened 80% into a 4 hour print - I heard it 'end' earlier than I thought it should (z-stage lowering) except it kept on lowering and tried to drive itself into the bottom of the printer - I had to switch it off!

I checked the gcode and can't see why it did it - generated by S3d and so I am a bit bemused, but also surprised that there is no protection at the base (I was lucky there were some crushable things there that were being crushed :)

Has anyone had a strange z stage behaviour?

Thanks

James

 

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    Posted · z axis lower end stop

    It's because you turned of the "Update machine definition using settings below" in the advanced settings under G-Code. You really should leave that enabled in S3D, unless you want to grind more teeth :)

     

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    Posted · z axis lower end stop

    Hi Blizz,

    Not sure I understand what it does, but it was ticked and had the UM definitions correctly in there!

    Machine has printed from these settings perfectly before so I can't see what should suddenly get it to drive the zstage into the base of the printer!

    James

     

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    Posted · z axis lower end stop

    Hmm, I use S3D as well and I've only had the Z-axis problem with that option ticked off. S3D support also confirmed me that that was indeed the issue. Haven't had any behaviour like that with the option enabled.

     

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    Posted · z axis lower end stop

    Yeah good thing. They are pretty quickly with their replies and they've always attempted to really help me, not just a template response (as they should for that amount of money!)

     

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    Posted · z axis lower end stop

    Interesting - it was an error in the STL which sent the zstage plummeting downwards!

     

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    Posted · z axis lower end stop

    If you slice the same stl via cura, does it have the same problem? If not, you might want to send that STL to S3D support, perhaps they can improve their sanity checking.

     

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