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  1. #1
    3D Printer Noob
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    Aug 2019
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    CR 10 Clone CTC printing oblongs not squares - Y Axis less than X on Squares.

    Hi All.

    Can anyone help.

    It's a CTC 10 (Creality CR10 clone/copy).

    If I print a perfect square it will come out oblong. IE the X Axis is twice as long as the Y.

    I know what your thinking.... Tensioners, belts etc etc... been through and tightened everything no effect.

    If it was a slipping belt / grub screw etc I would expect to see inconsistent results but the side walls are always bang on just not square.

    Tried moving the stepper motors while they are engaged on the X + Y and I can't get them to slip.

    Thought I'd run it past the experts before I rip open the PSU and start adjusting the stepper motor voltage controllers - vr's.

    I doubt it's my Cura slicing software the stock examples provided with the printer also elongated.

    Any help welcomed.

  2. #2
    Super Moderator
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    There is likely a scaling factor setting somewhere but it should default to 1:1.
    The only other time I've seen this is when the factory put the wrong pulley on the belt drive.
    How far is it off?

  3. #3
    3D Printer Noob
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    Aug 2019
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    Hi TommyDee.
    Thanks for the reply.

    I designed a 4cm cube in Freecad and sliced it in Cura 15. After printing I measured both sides. One was 3.97cm ish - pretty darn close.
    The other was 3.5cm.
    I managed to find the motor control settings "Control" and adjusted the movement mm for Y axis from the default 80 to 92 - complete guess.
    The cube printed 3.97cm x 4.07 so I was chuffed, however tried to print a simple nut and bolt which was all over the place, the thread being badly elongated again in the same direction on the X.

    I'll try swaping the X and Y stepper motors later tonight. If it prints elongated in the opposite direction I should be able to eliminate stepper motor and pulleys etc (if it works).

  4. #4
    Super Moderator
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    Nov 2016
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    You found the compensation factor in the 'control'. It sounds like it is not remaining if it only took for one print. If that is the case, there is probably a settings file somewhere that this needs your change to be made permanent.

 

 

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