separate drive with rEFInd as boot manager is fine. Windows will sometimes still alter the boot sequence to make it take priority, but that’s a relatively quick fix and doesn’t happen all that often.

I use cura as slicer and onshape for modeling. Onshape is browser-based and I found f360 to be a bit more intuitive, but it’s fully featured and works well.

I don’t think this is implemented in the standard datetime library, but in principle overriding sub is easily possible and you can define it as you’d wish.

However, I think subtracting a year is a bit ill defined, because it isn’t clear which year you’re subtracting given the leap year issue.

one could certainly implement something like that in python, something like time.now - 10 * time.unit.year

Yeah kind of, but you need to have an actual machine running windows somewhere (preferably within the same network)

A VM would be more like “a window running windows”