trying to figure out axis \"lag\"

New Home Forum Mostly Printed 3D Printer -MP3DP Troubleshooting – MP3DP trying to figure out axis \"lag\"

This topic contains 6 replies, has 4 voices, and was last updated by Profile photo of Ryan Ryan 3 months, 1 week ago.

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  • #26982
    Profile photo of Jon Petersen
    Jon Petersen
    Participant

    Bought a used printer (printed gray and black parts). The seller sent me all the parts except frame and x/Y axis conduit, which I cut locally.

    Having problems keeping one axis aligned. I have about three sixteenths of a difference. I have attempted to hold the axis in alignment and tighten the belts, but after only a few movements, the alignment is lost.

    Secondly, the print head sags, and I’ve pulled it back up level with cable ties.

    I’ve attached three pictures.

    first picture shows the gap in alignment.

    Second shows unit overall. Third picture shows print head with cable tie fix.

    #27002

    Can’t see anything, your pictures are too small 🙂

    #27015
    Profile photo of Barry
    Barry
    Participant

    From what I can see, which isn’t much, your print head mount is upside down.

    #27021
    Profile photo of Jon Petersen
    Jon Petersen
    Participant

    That’s what I get for trying to use iCloud to transfer pictures. See if these are any better.

    #27041
    Profile photo of Ryan
    Ryan
    Keymaster

    Those are some very early parts, I hope they were really cheap.

    The belts do not adjust alignment the center assembly does, it is a bit tricky but you can get it very square. One of the biggest reasons we don’t use those parts anymore is how difficult it was to square them. I spent months on the redesign. Look through the current center assembly instructions for a basic idea of how squaring works. You need to take it apart a bit.

    I’m not sure what is going on with that hot end mount but it shouldn’t be hanging off the tubes like that and usually if you pull the strap the other direction it locks it in place better. This has had a major redesign as well.

    #27052
    Profile photo of Jon Petersen
    Jon Petersen
    Participant

    Is it possible to purchase the new hot end mount and will it fit on my current system or should I buy a complete set of just the center?

    #27053
    Profile photo of Ryan
    Ryan
    Keymaster

    A new mount won’t fit.

    It is best to replace it all. Every part has been improved except the feet.

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