Milford

Makerbot Replicator 2
Harris County Public Library, via Flickr/CC - http://ow.ly/AuFTA

Attention residents of Milford: we don’t want to alarm you, but there is a replicator in your library.

Actually, it's a Makerbot Replicator 2, and it’s not as sinister as it might sound. This device is better known as a 3-D printer.

David Brooks tested out the printer for his Granite Geek science column for the Nashua Telegraph and Granite Geek.org, and he walks us through the process.