totally agree. I do my hobby work under a work funded fusion account. If I didn’t have paid fusion, I’d probably persevere with freecad or use onshape. I liked using onshape - it’s pretty similar to fusion from my experience. I haven’t tried tinkercad yet. TBF the charging for colours was a pantone thing. What shits me with fusion is if you want to render an animation you still have to pay for it to be rendered in the cloud even with a paid subscription. use case is pretty limited but it would be a nice thing to play around with, especially given most home computers are more than powerful enough to render at home.
Have you isolated the 5v line on the USB between printer and octopi? How does it go when printing direct of the printer?