Circles aren't Circles anymore…

New Home Forum Milled Printed 3D Printer -MP3DP Troubleshooting – MP3DP Circles aren't Circles anymore…

This topic contains 3 replies, has 2 voices, and was last updated by  Jeff 6 months, 2 weeks ago.

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  • #91966

    Jeff
    Participant

    This pic is the bottom of the LCD case (the part on the print bed):

    IMG_8468-edit

    This pic is the top of the case.  Notice the difference in the screw holes?

    IMG_8469-edit

    Also, I printed out the left and right sides of the case before I noticed this and they are all jacked up as well.

    IMG_8472

    IMG_8471

    Any ideas of what could be causing this?  My belts look good and the machine seems to be moving correctly.  In Repertier it looks ok as well if you follow the print as it goes, so my computer thinks it’s doing the correct thing and sending the correct gcode to my miniRambo.  I’m at a loss and am just going to reboot the damn thing (like any other strange, new computer weirdness).  lol.

    Edit: in remembering the way I had these laid out in Slic3r (default layout when you load them in Repetier) I think it’s my Y axis that’s gone goofy.  I’ll have to check the stepper and make sure there is no slop in the GT2 attached to the shaft.  It came loose once before…  Does anyone know the correct size of Allen wrench for those tiny little set screws?

    #91985

    Aaryn
    Participant

    Yeah I was going to say it looks like a loose belt or loose drive pulley.  I don’t remember the size but they are tiny metric.  If it is your set screws and they keep getting loose.  You want to use some locktite on them.

    1 user thanked author for this post.
    #91994

    Jeff
    Participant

    Yeah I was going to say it looks like a loose belt or loose drive pulley. I don’t remember the size but they are tiny metric. If it is your set screws and they keep getting loose. You want to use some locktite on them.

    I know I got a screw loose, I just didn’t expect it to be in my MP3DP.  ?

    im going to check all my drive pulleys and locktite them (that’s a great idea!).  At least I know it’s metric, I can go through my junk bin of loose Allen wrench’s and try to find it.

    Thanks Aaryn!

    #92030

    Jeff
    Participant

    After looking at my slic3r settings it looked like it was the X axis that was off, and sure enough, the set screws were loose.  I did as you suggested and put locktite on them (also did the Y while I was at it).  First test print after doing that and I have circles again!

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