MAKE’s 3D Print Shop Weekend. Fifteen printers are being evaluated, tested, and reviewed as part of our upcoming 3D printer special issue. (Photo by John Abella)

The 3D Print Shop set up and ready for its close up. (Photo by Gregory Hayes/MAKE)

The team gets down to business. From left to right: Eric Weinhoffer, Brian Melani, Ethan Hartman, Eric Chu, Keith Hammond. (Photo by John Abella)

The Printerbot LC and Printerbot Jr. (Photo by John Abella)

The Lulzbot AO-100, with its unique spool holder. (Photo by Gregory Hayes/MAKE)

MAKE Labs intern Brian Melani works on assembling the Felix printer kit. (Photo by John Abella)

Cubify’s Cube (Photo by Gregory Hayes/MAKE)

The “torture test” object being printed on the Cube. (Photo by John Abella)

Lyra Levin works on getting a file ready for the Ultimaker. (Photo by John Abella)

A lot of 3D printing is watch and waiting, ’cause as 3D Print Shop honcho Matt Griffin says: “Unattended 3D printers do scary things.” (Photo by John Abella)

The Solidoodle 2. (Photo by Gregory Hayes/MAKE)

Type A Machines‘ Series 1 printer. (Photo by Gregory Hayes/MAKE)

Trinity Labs’ MendelMax 3D Printer (Photo by Gregory Hayes/MAKE)

MAKE’s Eric Weinhoffer putting together the RapMan. (Photo by Gregory Hayes/MAKE)

Team members Blake Maloof and Eric Weinhoffer monitor their prints. (Photo by John Abella)

The nautilus gear, a true test of 3D printer mettle. (Photo by John Abella)