NY bill would require a criminal history background check for the purchase of a 3D printer::Requires a criminal history background check for the purchase of a three-dimensional printer capable of creating firearms; prohibits sale to a person who would be disqualified on the basis of criminal history from being granted a license to possess a firearm.
If you buy private sure, but I’m not sure how liability works then. Typically medical insurance will refuse to cover vehicle related injuries, so if you or someone else is injured while operating their car on your own property you may be SOL.