Oh! The “brassic” guy! I don’t have much help to offer, but I didn’t know that term, had to look it up and found the tv show :D so thank you.
A tiny bit of potential help: you mention wanting to use desiccant in the boat. I’m obviously not an expert, but it sounds like a bad idea, as the stuff absorbs water… but maybe you mean in small amounts, so that wouldn’t make a difference.
I’m thinking it looks like the print gets to a spot where it can get faster, and your hot end can’t keep up with the temperature required by that filament, causing under extrusion. If my guess is correct, it would show on a small test print (same settings) where you get looooong straight lines to allow for speed. And would disappear by slowing down. Since it looks like a relatively expensive filament I suggest you wait for more feedback before trying my test, just in case I got it wrong and my test would waste some filament for nothing.
LIDAR sucks, accuracy wise. If you want accuracy, and hate yourself, then you need an iPhone XR/XS because that was the generation with the most accurate FaceID (for whatever reason). Or go photogrammetry, the LIDAR can help but isn’t the main thing there… this is both free and great. With a Mac you can get the data processed faster, or it can be done (paid) via cloud, or with less accuracy and a bit of patience, on device. It’s not going to be a professional solution, but depending on the task it works and chances are the hardware is already there :)
SV07 then? It’s pretty full optional, but I believe they didn’t open source the whole thing.
You might want to double check this, but as far as I remember both the Sovol SV06 and SV08 are open source. The SV06 sounds in line with your desired budget, IF I remember correctly the open source thing. And as others have said, Cura, Prusa slicer and Orca are open source and cross platform.
A bit hard to tell, as every printer is different, but try a small test file at let’s say 100 mm/s? I use Cura (really, really dislike the Slic3r/Prusa Slicer/Orca interface) and here it’s called “Print Speed”. Changing that will lower the others in the same way, can’t imagine it works differently in Prusa Slicer.
True about PETG, but the thing about a specific filament being stringy stands: I have a green PETG that, once it gets some time in the drier, is almost perfect. And an orange one, that can sit in the drier a whole day but still string.
This could be two things, aside from what you considered. Did you increase the speed? Because if I remember correctly the SV06 has a bit of a wimpy cooling system, and as opposed to the SV07, no extra fan on the back. Another thing to consider is that sometimes you just have a filament that is stringy, did you try a different one, or so far it’s your only option?
Thanks, I think I get it. There’s a lot of humidity where I live too, so while not at the same scale, the problems are at least relatable. Best of luck with the project, it sounds like a cool but lengthy and complex journey that can really pay off!