80 lines
2.0 KiB
Markdown
80 lines
2.0 KiB
Markdown
---
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tag: m0423
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title: X Twist Compensation
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brief: Modify, reset, and report X-Axis Twist Compensation data
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author: thinkyhead
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requires: X_AXIS_TWIST_COMPENSATION
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since: 2.0.9.4
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group: calibration
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codes: [ M423 ]
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related: [ G29 ]
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notes:
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parameters:
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-
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tag: R
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optional: true
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description: Reset the Twist Compensation array to the configured default values.
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values:
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-
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type: flag
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-
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tag: A
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optional: true
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description: Set the X-Axis Twist Compensation starting X position.
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values:
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-
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tag: linear
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type: float
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-
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tag: I
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optional: true
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description: Set the X-Axis Twist Compensation X-spacing.
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values:
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-
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tag: linear
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type: float
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-
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tag: X
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optional: true
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description: Zero-based index into the Twist Compensation array. Requires a `Z` value.
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values:
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-
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tag: index
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type: int
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-
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tag: Z
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optional: true
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description: A Z-offset value to set in the Twist Compensation array. Requires an `X` index.
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values:
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-
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tag: index
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type: int
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examples:
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-
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pre: Report the current X-twist data to the host console.
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code:
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- M423
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pre: Reset X-twist data to the configured defaults.
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code:
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- M423 R
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-
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pre: Set the 5th value in the Twist Compensation array to -0.03.
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code:
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- M423 X4 Z-0.03
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-
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pre: Set the X-start position to 0 and the X-spacing distance to 50.
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code:
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- M423 M423 X0 I50
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---
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Use `M423` to reset, modify, or report X-Twist Compensation data.
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X-Twist Compensation is applied to the mesh on [`G29`](docs/gcode/G029)) to correct for a twisted X gantry. Meaningful X-Twist Compensation data is generated using a guided procedure in the LCD menu that compares measurements taken by the bed probe to readings taken manually at the nozzle. Since manual measurements are prone to inaccuracy, a metal feeler gauge is recommended over a paper test. If the first layer is still imperfect, `M423` can then be used to correct for small errors.
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