Open-source development has gone from the realm of software to hardware, as well, as it is now being used in the development of 3D printers. That is “makers” are modifying and copying existing machines—no, not illegally—to make mods on their own printers under the thinking that the technology will be continuously improved. Take, for example, the RepRap, which is perhaps the best example of an open-source printer. Now, there’s the “Ultimaker,” which was developed by three Dutch makers after experimenting with ways to improve the RepRap.

And improve they did.

Ultimaker features a work envelope of 210 x 210 x 220-mm (X, Y, Z). It can additively build parts in ABS and PLA. It weighs just 20 lb. Which is all fine and dandy. However, a big differentiating factor between Ultimaker and other open-source printers is in how it operates. For example, many are designed so that the printhead remains stationary and the build platform moves as parts are built. Ultimaker features what’s called “Cartesian bot” movement: the printhead moves horizontally and the build platform moves vertically. After the printhead deposits a layer onto the platform, the table lowers along the Z-axis so that the printhead can deposit a new layer to fuse with the previous one. This design allows Ultimaker to work faster (up to 150 mm/s) and more accurately (0.1 mm) than current units.

Ultimaker costs about $1,700. It’s currently available for pre-order in the United States.