Reddit user Eponra has posted the details of their Flatpack 3D printer on GitHub. You can make this fixed bed cantilever foldable printer with easy-to-source parts.

Eponra assures makers that all parts are off-the-shelf, meaning it’s easy to assemble and source for DIY enthusiasts.

Once folded, the printer can fit into a spool box (220x210x75mm), making it entirely small enough to carry around. It can print in a respectable 120x 114 x 114 mm build volume when unfolded and set up.

The design has a fixed bed, with a cantilever-mounted print head moving in all axes. It can print at temperatures up to 300°C if using Eponra’s suggested Mellow Copper NF Smart 500°C. This hot end uses an Ender/CR-10 style mount, so we surmise it could use a large number of hot ends.

The printer can be powered using a 150W external power brick.

For safety reasons, Eponra chose a DC-powered print bed but stated the design could also use an AC bed, which would mean quicker heating but a trickier, less accessible build for DIY novices.

The design is entirely open source and available on GitHub. Eponra credits apsu for coming up with the idea to use a fixed bed cantilever on the 3D Printing discord #reprap-and-custombuilds channel, where designers can find plenty of inspiration and conversation about custom builds like the Flatpack.