Does skew correction only correct during delta calibration / bed leveling or also correct skew when printing parts?
I dont know how to activate this feature.
In console:
M852
Outputs:
Skew Factor XY: 0.00 XZ: 0.00 YZ: 0.00
Stock Code:
With my measured values:
Also tried:
My process between uploading or upgrading firmwares:
G29 P0;
M502
M500
M140 S60 ;
M104 S160 ;
G28
M665 B70 ; (error with g33 unless this command 1st)
G33 P3 V1 ;
M500 ;
G28;
G29 P1;
G29 S1;
G29 A;
M500;
Printer is a 3ku Delta.
nozzle as probe
heated bed.
It prints nicely. I just havent figured out how to enable this feature.
M501:
I dont know how to activate this feature.
In console:
M852
Outputs:
Skew Factor XY: 0.00 XZ: 0.00 YZ: 0.00
Stock Code:
/** * Bed Skew Compensation * * This feature corrects for misalignment in the XYZ axes. * * Take the following steps to get the bed skew in the XY plane: * 1. Print a test square (e.g., [www.thingiverse.com]) * 2. For XY_DIAG_AC measure the diagonal A to C * 3. For XY_DIAG_BD measure the diagonal B to D * 4. For XY_SIDE_AD measure the edge A to D * * Marlin automatically computes skew factors from these measurements. * Skew factors may also be computed and set manually: * * - Compute AB : SQRT(2*AC*AC+2*BD*BD-4*AD*AD)/2 * - XY_SKEW_FACTOR : TAN(PI/2-ACOS((AC*AC-AB*AB-AD*AD)/(2*AB*AD))) * * If desired, follow the same procedure for XZ and YZ. * Use these diagrams for reference: * * Y Z Z * ^ B-------C ^ B-------C ^ B-------C * | / / | / / | / / * | / / | / / | / / * | A-------D | A-------D | A-------D * +-------------->X +-------------->X +-------------->Y * XY_SKEW_FACTOR XZ_SKEW_FACTOR YZ_SKEW_FACTOR */ //#define SKEW_CORRECTION #if ENABLED(SKEW_CORRECTION) // Input all length measurements here: #define XY_DIAG_AC 282.8427124746 #define XY_DIAG_BD 282.8427124746 #define XY_SIDE_AD 200 // Or, set the default skew factors directly here // to override the above measurements: #define XY_SKEW_FACTOR 0.0 //#define SKEW_CORRECTION_FOR_Z #if ENABLED(SKEW_CORRECTION_FOR_Z) #define XZ_DIAG_AC 282.8427124746 #define XZ_DIAG_BD 282.8427124746 #define YZ_DIAG_AC 282.8427124746 #define YZ_DIAG_BD 282.8427124746 #define YZ_SIDE_AD 200 #define XZ_SKEW_FACTOR 0.0 #define YZ_SKEW_FACTOR 0.0 #endif // Enable this option for M852 to set skew at runtime //#define SKEW_CORRECTION_GCODE #endif
With my measured values:
/** * Bed Skew Compensation * * This feature corrects for misalignment in the XYZ axes. * * Take the following steps to get the bed skew in the XY plane: * 1. Print a test square (e.g., [www.thingiverse.com]) * 2. For XY_DIAG_AC measure the diagonal A to C * 3. For XY_DIAG_BD measure the diagonal B to D * 4. For XY_SIDE_AD measure the edge A to D * * Marlin automatically computes skew factors from these measurements. * Skew factors may also be computed and set manually: * * - Compute AB : SQRT(2*AC*AC+2*BD*BD-4*AD*AD)/2 * - XY_SKEW_FACTOR : TAN(PI/2-ACOS((AC*AC-AB*AB-AD*AD)/(2*AB*AD))) * * If desired, follow the same procedure for XZ and YZ. * Use these diagrams for reference: * * Y Z Z * ^ B-------C ^ B-------C ^ B-------C * | / / | / / | / / * | / / | / / | / / * | A-------D | A-------D | A-------D * +-------------->X +-------------->X +-------------->Y * XY_SKEW_FACTOR XZ_SKEW_FACTOR YZ_SKEW_FACTOR */ #define SKEW_CORRECTION #if ENABLED(SKEW_CORRECTION) // Input all length measurements here: #define XY_DIAG_AC 141.03 #define XY_DIAG_BD 141.56 #define XY_SIDE_AD 100.89 // Or, set the default skew factors directly here // to override the above measurements: #define XY_SKEW_FACTOR 0.0 #define SKEW_CORRECTION_FOR_Z #if ENABLED(SKEW_CORRECTION_FOR_Z) #define XZ_DIAG_AC 140.64 #define XZ_DIAG_BD 140.49 #define YZ_DIAG_AC 139.79 #define YZ_DIAG_BD 139.91 #define YZ_SIDE_AD 99.23 #define XZ_SKEW_FACTOR 0.0 #define YZ_SKEW_FACTOR 0.0 #endif // Enable this option for M852 to set skew at runtime #define SKEW_CORRECTION_GCODE #endif
Also tried:
#define SKEW_CORRECTION
#if ENABLED(SKEW_CORRECTION)
// Input all length measurements here:
#define XY_DIAG_AC 141.03
#define XY_DIAG_BD 141.56
#define XY_SIDE_AD 100.89
// Or, set the default skew factors directly here
// to override the above measurements:
//#define XY_SKEW_FACTOR 0.0
#define SKEW_CORRECTION_FOR_Z
#if ENABLED(SKEW_CORRECTION_FOR_Z)
#define XZ_DIAG_AC 140.64
#define XZ_DIAG_BD 140.49
#define YZ_DIAG_AC 139.79
#define YZ_DIAG_BD 139.91
#define YZ_SIDE_AD 99.23
//#define XZ_SKEW_FACTOR 0.0
//#define YZ_SKEW_FACTOR 0.0
#endif
// Enable this option for M852 to set skew at runtime
#define SKEW_CORRECTION_GCODE
#endif
My process between uploading or upgrading firmwares:
G29 P0;
M502
M500
M140 S60 ;
M104 S160 ;
G28
M665 B70 ; (error with g33 unless this command 1st)
G33 P3 V1 ;
M500 ;
G28;
G29 P1;
G29 S1;
G29 A;
M500;
Printer is a 3ku Delta.
nozzle as probe
heated bed.
It prints nicely. I just havent figured out how to enable this feature.
M501:
Recv: echo: V47 stored settings retrieved (614 bytes; crc 20025) Recv: Unified Bed Leveling System v1.01 active. Recv: Recv: Unified Bed Leveling initialized. Recv: Recv: Mesh loaded from slot 1 Recv: Mesh 1 loaded from storage. Recv: echo: G21 ; Units in mm Recv: echo: M149 C ; Units in Celsius Recv: Recv: echo: Filament settings: Disabled Recv: echo: M200 D1.75 Recv: echo: M200 D0 Recv: echo: Steps per unit: Recv: echo: M92 X80.00 Y80.00 Z80.00 E110.34 Recv: echo: Maximum feedrates (units/s): Recv: echo: M203 X300.00 Y300.00 Z300.00 E200.00 Recv: echo: Maximum Acceleration (units/s2): Recv: echo: M201 X4000 Y4000 Z4000 E3000 Recv: echo: Acceleration (units/s2): P R T Recv: echo: M204 P1000.00 R2000.00 T3000.00 Recv: echo: Advanced: S T B X Z E Recv: echo: M205 S0.00 T0.00 B20000 X20.00 Y20.00 Z20.00 E5.00 Recv: echo: Unified Bed Leveling: Recv: echo:echo: M420 S1 Recv: Recv: Unified Bed Leveling System v1.01 active. Recv: Recv: Active Mesh Slot: 1 Recv: EEPROM can hold 8 meshes. Recv: Recv: echo: Endstop adjustment: Recv: echo: M666 X0.00 Y-1.04 Z-1.32 Recv: echo: Delta settings: L R H S B XYZ Recv: echo: M665 L228.00 R108.59 H296.73 S160.00 B70.00 X-0.47 Y0.32 Z0.16 Recv: echo: Material heatup parameters: Recv: echo: M145 S0 H205 B60 F255 Recv: echo: M145 S1 H240 B100 F255 Recv: echo: PID settings: Recv: echo: M301 P21.04 I1.24 D89.65 Recv: echo: Z-Probe Offset (mm): Recv: echo: M851 Z0.30 Recv: echo: Skew Factor: Recv: echo: M852 I0.00 J0.00 K0.00 Recv: echo: Linear Advance: Recv: echo: M900 K170.00 R0.03