I can only speculate, and I'm not an expert, just someone who understands the basic concepts, but I'll try as best I can. I'd imagine you could still own a hobbyist 3D printer at a minimum. Industrial ones might be difficult to get, but you could probably get print time on an industrial one as needed. It'd probably depend on how common they were and how important they were. If they were being used to produce important goods and we didn't have as many as we wanted for those goods, it'd get hard to get one. If there's enough that distributing some of the professional printers wouldn't disrupt infrastructure, I'd guess you could get your hands on one.