This remix adds M6 screw arrangement to correct Auto Z-gantry calibration.
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updated April 17, 2023

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This remix corrects "auto Z-Align" function on Sovol SV06. 

Normally, due to inconsistent assembly after running Auto Z-alignment, one will not achieve parallelity of X axis and the heat Bed. This happens due to one of the gantry pillars being assembled higher than the other.

With the addition of adjusting screw to the top gantry braces, we can alter how high the X carriage can raise during auto Z-align to achieve the perfect level.

This mod will require:

  • Heat insert (the one I am using are 8mm OD),
  • Screw 6mmx45mm (can be longer),
  • M6 nut to match the screw (for locking the position of the screw).

How to:

Run auto z-align and let the gantry come down. Use a precision tool like a vernier caliper to measure the distance from the frame of the printer to the X axis linear rod and write it down for reference (I suggest doing X-axis 3 measurements for each side to mitigate the chance of error).

Once measurements are done you need to subtract the lower number from the higher number to obtain the difference between left and right height. Now print the top brace for the side, which was higher (you can print both sides, but technically, only one is required).  Install newly printed part with adjusting screw and nut. Now, the the pitch of M6 screw is 1mm, so turning it half a turn will move it by 0.5mm, and turning it a quarter turn will move it by 0.25mm.

Knowing this, Run the X-carriage all the way up. Now bring the adjustment screw in contact with the X-carriage. After the firm contact was established - adjust the screw by the difference between the adjustments left and right sides. Lower the gantry and re-do auto z-align with measurements. Repeat a couple of times adjustment of the screw to fine-tune the alignment.

 

Also, the file is parametric (as it came from the original author), so it is possible to adjust the location of the linear rod location to mitigate misalignment with the motor mount of the Z-axis.

  

 

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