Why replace when you can fix? 3D printing lets us repair objects around the home to extend their useful life.
How I learned to 3D Print
A quick back story: my oldest son received a 3D printer for Christmas 2018 from his Grandparents. While a 3D printer can be very cool, the thing that bothered me was, he would only download things from Thingiverse [https://www.thingiverse.com/] and print them out - he wasn't making