3D printers are becoming so advanced and widespread that the auto industry uses them to make rare car parts. Some construction firms use them to pour concrete.
Also, more schools are teaching teenage students how to use smaller versions of the printers — and teachers in some school districts are learning how to teach even young children how to use them.
Take, for example, the Port Washington-Saukville School District. This week, the district played host to a summer instruction session for teachers to learn about new technology.