Changing Default Marlin Tool Number

[O4k]

I have a Bigrep Studio with Marlin Firmware and a dual extruder. I am trying to change the default tool number for the gcode and it appears that the default tool number starts at 'T1'. This is unfortunate since the BigRep's default extruder is 'T0'. Short of creating a post-script specifically to change this number, I have not found any easy way to adjust the tool number.

Is there any way to change the tool number in superslicer when running Marlin?

[supermerill]

the TX command?
put T{next_extruder+1} in the custom toolchange gcode.

[O4k]

Thank you! I used this with T{next_extruder-1} and it seemed to work well.

I forget all the ways you can use these variables!

[supermerill]

weird, I though that the extruder id began at 0 ...

[O4k]

I have been messing with quite a few settings on the printer and in the slicer so take all of this with a grain of salt.
I've gotten inconsistent results; about half of the time T1 was mentioned at the at the beginning of the gcode file, and the other times it is not even listed.

To really iron this out, I will have to be more thorough when testing it out. For now, this workaround will work.

[O4k]

Figured it out!

This ended up being a problem with the firmware and my assumptions about the GCode not Superslicer. It appears that the labeling of objects at the start of the print is unsupported by this printer's version of marlin and so the "T1" part label was being confused as a command to switch extruders.