# Pressure advance

#### Orca Slicer V-Shape Mode Pressure Advance Calibration Guide

This guide explains how to calibrate the pressure advance setting using V-Shape Mode in Orca Slicer. You will need to adjust settings in `printer.cfg`, print a calibration pattern, and fine-tune the pressure advance value based on the print results.

**Preparation**

1. **Update `printer.cfg`**:
   * Before starting the calibration, set `pressure_advance` to `0` in your `printer.cfg` file to ensure no pressure advance effect during the test.

     ```ini
     [extruder]
     pressure_advance = 0
     ```

**Calibration Process**

1. **Slice the Model**:
   * Slice the model with V-Shape Mode enabled. Review the complete calibration pattern in the preview interface to confirm it’s correctly set up.

<figure><img src="https://3855363247-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fcs6QyzgclSdyKWWV05Sb%2Fuploads%2FPCQ6zVm4DAwZOCuBOu9Z%2FV%E5%9E%8B%E6%A8%A1%E5%BC%8F.jpg?alt=media&#x26;token=eabff564-7510-4ccb-ac0e-e81dd307f8cb" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3855363247-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fcs6QyzgclSdyKWWV05Sb%2Fuploads%2FA8CNVqJubhQnSB4gKbUs%2F%E6%89%93%E5%8D%B0V%E5%9E%8B%E7%BA%BF.jpg?alt=media&#x26;token=3c0f5c86-11f7-4154-8e51-3b40a4173885" alt=""><figcaption></figcaption></figure>

1. **Print the Calibration Model**:
   * Print the calibration model with `pressure_advance` set to `0`.
   * Examine the printed V-Shape pattern, especially the corners, for any signs of uneven extrusion or other issues.

**Evaluation and Adjustment**

1. **Evaluate Print Results**:
   * Assess the V-Shape pattern, focusing on the clarity and consistency of the corners.
   * Identify the pressure advance value that yields the best print quality.

<figure><img src="https://3855363247-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fcs6QyzgclSdyKWWV05Sb%2Fuploads%2FUYKZCb3oAuCDiVOR8kSn%2F%E5%8E%8B%E5%8A%9B%E6%8F%90%E5%89%8DV%E5%9E%8B%20%E5%AE%9E%E6%8B%8D.jpg?alt=media&#x26;token=4a4ae6ab-84ee-4723-a864-cfdc46080319" alt=""><figcaption></figcaption></figure>

1. **Adjust `pressure_advance`**:
   * Update the `pressure_advance` value in your `printer.cfg` based on the results:

     ```ini
     [extruder]
     pressure_advance = 0.03
     ```
2. **Restart the Printer**:
   * After updating the configuration, restart your printer to apply the new `pressure_advance` settings.
3. **Reprint and Verify**:
   * Reprint the calibration model to confirm that the new `pressure_advance` value has improved the print quality.

**Finalizing Calibration**

1. **Confirm Results**:
   * You can test the adjusted pressure\_advance value by printing a VORON cube to check the sharpness and consistency of the corners.
2. **Save Settings**:
   * Once the calibration is satisfactory, save the settings for future prints.

By following these steps, you’ll effectively calibrate the pressure advance setting in Orca Slicer using V-Shape Mode, leading to improved print accuracy and quality.&#x20;