You're off to a good start Chris. 3D printing is become much more mainstream these days. I imagine chopping and changing resin is harder than styrene. Certainly some associated health issues with sanding and cutting resin.
Oh yeah, I always wear a mask when slicing and sawing and grinding because it does produce dust, but it's pretty heavy so it doesn't cloud too badly. The resin most wargames vehicles are made of IS quite hard, but it does cut relatively easily with a razor saw, so not SO much more difficult than styrene. Plus you can break bits off with a pair of pliers! Some manufacturers, the resin is practically indistinguishable from styrene anyway
We inherited a top-range 3D printer last year, from a late friend who was a professional model maker, but we had nowhere to set the thing up properly, so I've not downloaded the thirty-or-forty vehicles I've seen that I NEEED! And print them off at the relative size / scale I work in. Fortunately, as here, I've found some very friendly producers of stuff who are willing to print me off copious spare wheels. My next project after this is a Morris CDSW and then a six-wheeler Albion BY, all of which I got spare wheels from the very nice lady at Highlands 3D printing.
Some things I can convert, but the Albion is going to be almost entirely scratchbuilt, apart from the wheels!