Printer using some built in pause/resume for tool change?

gnydick

I'm getting superfluous extrude started happening AFTER my tpost* file finished. It REALLY messes up my prints because a large blob is produced. I also tried disabling the extrude from my resume.g thinking the printer was treating it like it was pausing/resuming and that didn't change anything. I'm only getting extra retractions and extrusions, the proprietary XYZ movements associated with my pause or resume scripts.

The extra extrusions and retractions are 10mm. I can see it while watching the drive counter.

Here's the time line. the .. are indents for nesting.

printing
printing
tool change initiated

.. enter tfree0.g

if heat.heaters[{tools[0].heaters[0]}].current >= 160 & job.file.fileName != null
	M98 P"/macros/  LOWER WIPER"
	M98 P"/macros/_ tip forming"

.... enter LOWER WIPER

M98 P"/sys/retractprobe.g"
G91
G1 Z15 F12000
G90
M98 P"/macros/1_Move_Centre.g"
G1 U28 F9000

G1 X220 Y50 F12000

if tools[0].state == "active"
	G1 X300 Y270 F12000
if tools[1].state == "active"
	G1 X300 Y252 F12000

.... exit LOWER WIPER

.... enter _ tip forming

M83
G1 E1 F3600
G1 E-20 F3600

.... exit _ tip forming

.. exit tfree

.. enter tpost0.g

if heat.heaters[{tools[0].heaters[0]}].current >= 160 & job.file.fileName != null
	G1 E20 F3600
	M98 P"/macros/  WIPE"
	M98 P"/macros/  RAISE WIPER"

.... G1 E20 F3600
.... enter WIPE

G91
G1 U-1.4 F12000

;G1 X20 F54000

; LR diag
G1 X-80 Y-5 F36000
G1 X80 Y5 F36000

G1 Y-5 F36000

; RL diag
G1 X-80 Y5 F36000
G1 X80 Y-5 F36000

G1 Y5 F36000

G1 X-40 F36000
G1 X20 F36000

G1 X-40 F36000
G1 X20 F36000

G1 X-40 F36000
G1 X20 F36000

G1 X-40 F36000
G1 X20 F36000

G1 U1.2 F36000
G90

.... exit WIPE

.... enter RAISE WIPER

G1 X140 Y140 F12000
G1 U0 F12000
G91
G1 Z-15 F900
G90

.... exit RAISE WIPER
.. exit tpost.g

.. move back to printing position XY
.. extra extrude??? <------ HERE
.. move down to printing position Z
resume printing

dc42

Are you sure that your slicer isn't inserting them? Take a look at the GCode file you are trying to print, to see whether there are retract/extrude commands around the T commands.

gnydick

@dc42 I woke up in the middle of the night with a big "Doh!" So, yes, you're right.