Big Problems with Correction Map G33 on Delta Printer with 100mm Radius Bed

Hi all :)

First of all sorry for my very bad English ;)

I had a Delta Printer with a 100 radius Bed. G32 does not work very well for me because the bed is not 100% flat.
So i wanted to switch to g33 (DISTORTION_CORRECTION)

BUT !

If i start G33 the Print Head always run out of Bed on Top Left Corner :( and i had to Emergency Stop them to get no Damage.

the Parameters in Firmware are

#define DISTORTION_CORRECTION 1
#define DISTORTION_CORRECTION_POINTS 8
#define DISTORTION_LIMIT_TO 2
#define DISTORTION_CORRECTION_R 95
#define DISTORTION_PERMANENT 1
#define DISTORTION_UPDATE_FREQUENCY 15
#define DISTORTION_START_DEGRADE 0.5
#define DISTORTION_END_HEIGHT 1
#define DISTORTION_EXTRAPOLATE_CORNERS 0
#define DISTORTION_XMIN -60
#define DISTORTION_YMIN -60
#define DISTORTION_XMAX 60
#define DISTORTION_YMAX 60

Firmware Version are lastest Stable 1.0............

I Dont know why. plz help me ! :)

Board is Arduino Due 32 Bit

Comments

  • falls mir jemand antworten möchte auch gerne in deutsch :) 
  • nobody has an idea?
  • For deltas 
    #define DISTORTION_EXTRAPOLATE_CORNERS 1
    is always a good thing to increase the testable area. Always think that extruder with applied z offset needs to reach the positions. In this case a lower DISTORTION_CORRECTION_POINTS is normally helpful. 5 is a good value.
    Reduce DISTORTION_CORRECTION_R if it still does not fit!

    Also always run G33 AFTER G32 and not alone. You still want to correct bed tilt in addition to bumps.
  • edited May 28
    ist there any way to got a list of the coordinates without driving the effektor ? 
    thanks for your answer i will test that 
    now i use

    #define DISTORTION_CORRECTION 1
    #define DISTORTION_CORRECTION_POINTS 5
    #define DISTORTION_LIMIT_TO 2
    #define DISTORTION_CORRECTION_R 90
    #define DISTORTION_PERMANENT 1
    #define DISTORTION_UPDATE_FREQUENCY 15
    #define DISTORTION_START_DEGRADE 0.5
    #define DISTORTION_END_HEIGHT 1
    #define DISTORTION_EXTRAPOLATE_CORNERS 1
    #define DISTORTION_XMIN -60
    #define DISTORTION_YMIN -60
    #define DISTORTION_XMAX 60
    #define DISTORTION_YMAX 60

  • it works :) 

    #define DISTORTION_CORRECTION_R 80 works fine !!!!

    thx !
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