[Telson]

https://drive.google.com/file/d/1yv3CdCTimb15CPOwAOGaZMm6bY-T6drE/view?usp=drivesdk” alt=”Custom makelangelo”

This is my machine, mostly 3D printed parts

• This reply was modified 4 months, 2 weeks ago by Telson.
• This reply was modified 4 months, 2 weeks ago by Telson.

[Telson]

Hi everone,
I need some more help, I have a custom built Makelangelo, I have had to change the phisical setup of my machine and recalculate all the settings in Marlin, I dont think my maths is mathing, for some reason when drawing the outline of a A4 sheet of paper I now have pinching at the bottom. reading the help documentation it says “Your pen home position is too high on the board. Move it down a bit and try again.”
My home position is X0, Y-438 based on my measurments (Gondela bottom center when endstops triggered)
My settings are:
#define POLARGRAPH_MAX_BELT_LEN 940 (measured from center of motor spindle to X0, Y-438)
#define BED_CENTER_AT_0_0
#define MANUAL_X_HOME_POS 0
#define MANUAL_Y_HOME_POS -438
#define X_BED_SIZE 660 (Motor spindle to motor spindle)
#define Y_BED_SIZE 876
#define X_MIN_POS (-X_BED_SIZE/2)
#define Y_MIN_POS (-Y_BED_SIZE/2)
#define Z_MIN_POS 0
#define X_MAX_POS (X_BED_SIZE/2)
#define Y_MAX_POS (Y_BED_SIZE/2)
#define Z_MAX_POS 100

Makelangelo software plotter settings are
MAKELANGELO_CUSTOM
Machine Width 660
Machine Height 876

when doing the A4 outline the machine does not raise far enough it only gets to about the half way up the boeard and starts drawing the outline of the A4 paper starting from the the top left of the piece of paper.
Im sure its somthing daft i have wrong or missed, but What do i need to change to correct the pinching issue.

[Telson]

Hi again Dan, thanks for the advice, it was spot on, simplified the image and no more double pen lift

[Telson]

Hi Dan, thanks for the quick reply, I never thought of that but it does make sense, I guess by the gcode I posted there is a very small move after the first pen down, simplifying it would get rid of that,
Thank you

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