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GCode mal generado para el segundo extrusor

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Quería relatarles el siguiente problema encontrado en la generación del GCode para impresión con doble extrusor. 

El problema es que cuando cambia del extrusor uno al extusor dos, no se incluye la secuencia de código que purga el hotend y además se incluyen instrucciones para volver al extrusor 1.

El resultado es que la pieza se imprime en un único color, el que tengamos en el extrusor uno.


Esto he comprobado que sucede en la versión 3.6 y en la version 4.0 (beta). 

Funciona correctamente en la version 3.4.1. 

No he probado mas versiones.


No es necesario imprimir para ver el problema. Se puede ver en la simulación (preview) que se muestra en el propio programa. 



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