I’ll keep my ramblings to this thread..
This Kickstarter project is thought provoking – a kind of multi tool machine with the tools ready to go, minus the routing / milling capability.
Actually an interesting idea to make a cartesian robot and not claim it is rigid enough to route with. Looks like an expensive MPCNC!
It does mention something called a masking fluid, which I looked into, and it turns out for fabric you use something called a resist
However, there is a video on the Tooli page which shows that airbrushing with stencils can create sharp lines