Dual X-axis purging over part

slaughter2k

Hi,

short intro: I do have a highly modified CR10 printer which got now a complete new, selfmade X-axis with two print heads.
I already did some working repetier configurations (Version 1.0.3) in the past, but now it is my first time with dual-x mode.
First: Print heads and offsets are calibrated and working. The only thing I am really struggling is the firmware behaviour at tool changes.
--> the new tool is always directly moving to the old tool position by firmware. I cannot influence that by gcode. This is for sure very bad if I want to purge the new tool before printing. This purging action will be done than directly at the position of the old tool...not good :D
I'd like to purge the new tool at parking position (similar to BCN3d sigma printer) bevor it does any move at all. Am I too silly to see that option? I am in fact a bit desperate because normally I am getting this small issues solved flawlessly :)

Is my problem clearly described? According my understanding I cannot solve it via a tool change script because the firmware is forcing the new tool to old position of old tool before he is reading the next gcode lines.

Repetier

That behaviour is influnced by

#define LAZY_DUAL_X_AXIS 0

Set it to 1 for lazy mode. Then it will move to position with first extrusion and otherwise stay at park position.

You might want to upgrade to 1.0.4dev which has some improvements here.

slaughter2k

thanks for that hint. I already read a bit about that "lazy mode" but did not really get the point how to activate it (google could not help me here)
--> So, I figured out that I have to add the line manually into the configuration.h (I pasted it right under #define DUAL_X_AXIS 1)

#define LAZY_DUAL_X_AXIS 1
Would be cool to directly implement this option as standard I guess?

Repetier

It really depends on how you plan to work. But I also prefer it as lazy.