@dc42
Thanks for your answer!
I'm running a printer on a Mini 5+ with 2 extruders mounted on the same carriage. The goal is to print both materials simultaneously but also independently (sort of an IDEX but with only one carriage). The reason behind this is that this is a bioprinter, and that both extruders deposit different material format. One is a gel and the other is a continuous material. So far I tried mapping both extruders on the same tool and control them through a mixing ratio. This is not convenient as I do not want both extrusion factor to be linked and rely on each other. I also tried having the extruders set to tools but the command at sent sequentially (which I don't want either).
Instead, I'd like to control the gel extrusion traditionally (through G1 E commands). In parallel, I'd like to send a long-distance command with the other extruder that would run in addition (at the same time) to the other gcode commands.
This is the reason why I tried mapping one extruder on a tool and the other on an axis, hoping I could use them both in parallel.
Here is an example (does not work as T2 G1 waits for previous T1 G1 to be completed)
T1
G91
G1 E4700 F240 ; Long distance command to be ran in background
G90
T2 ; Run this with second extruder in parallel to the first long distance command
G1 E1.2
G1 E2.4
G1 E3.6
G1 E4.8
Thank you for your precious help!