I did set up the material in job control first (Petra/JustinC/Ply 3mm) before pressing “Print” in Illustrator, if that’s what you mean? Or is there a way to set materials from within printer setup before actually hitting Print in Illustrator?
The material you set up in jobcontrol doesn’t actually matter for a new job - you always set the material settings in illustrator (or more accurately in the printer driver), but you can change them in jobcontrol.
For a case like this, it’s important to do it in illustrator, so that the vector lines don’t get rasterised. You do this by clicking print, then setup, then clicking preferences for the trotec printer driver. You’ll get the dialog you can see under “Operation Process” on the laser cutter page here: Laser Cutter - Trotec Speedy 300
In this you can set what kind of process you’re trying to do (standard, photo optimized, etc), and you can set the material you want to use. There’s also the same wrench button that you know from jobcontrol that lets you get to the material library to set up new materials, etc.
Whatever settings are set up here will override whatever is set up in jobcontrol for every new job. The only exception is if you already have a job on the print plate, in which case job control will ask whether you want to discard the settings in the file and use the plate parameters instead.
Would overlapping / overlaid lines confuse it? Simple example attached (wooden planks for a 2mm/1ft scale model).
For engraving processes, overlapping fills don’t matter, jobcontrol will just make a single region out of it. But for cut jobs, every single line is cut, no matter if it’s overlaying another line or not.
There’s a manual for jobcontrol as well by the way if you’d like to read more about this in detail: https://www.troteclaser.com/fileadmin/content/images/Contact_Support/Manuals/JobControl-Manual-EN.pdf