Backlash Compensation

If you have a unit which was shipped prior to September 2016, it is possible that your unit has X-axis backlash. 

The most common symptoms are: 

  • Diagonal traces specifically have poor in-fill
  • Changing direction in x-axis causes features to be misaligned
  • Pad location will not align with pad centers after repeated attempts 

To apply backlash compensation on your unit, you will have to perform a quick calibration procedure, and provide the V-One with the correct compensation constant - just follow the instructions below.  

The pattern we've supplied to diagnose backlash uses a Vernier scale to visually determine the amount of backlash in your unit. 

X Axis Backlash Calibration Pattern

Download the files in the link below, and print the .GTL file on your V-One.

Backlash Vernier Scale

 Print the design without any modifications! It's very important that the V-One follows the print exactly as intended.

Measuring Backlash

The Vernier scale has two rows of vertical lines. To diagnose the backlash, do the following: 

  1. Going from the right most end, find the first pair of lines (top and bottom row) which are perfectly vertically aligned.

     Use the pair on the far left side as a reference - these will always be aligned.
  2. Multiply the number that labels that pair by 0.025. This is the amount of backlash, in millimeters. 

    For example, the pair labeled 4 would give 4 x 0.025 = 0.1 mm of backlash.
  3. Open the gcode console (Alt+C), and enter M507 X### (where ### is the number you calculated in step 2, in mm).

You have now calibrated your V-One for backlash! We recommend taking a picture of the calibration pattern for reference, in case you need to check in future. 

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