Zero-waste multicolour 3D printing: WonderMaker ZR Ultra 4

The WonderMaker ZR Ultra 4 is a new 3D printer currently seeking backers through a crowdfunding campaign. One of the highlighted features is its ability to work with multiple filaments simultaneously. Equipped with up to four toolheads, the printer allows for effortless switching between various colours and filaments – in just five seconds, according to the manufacturer. Furthermore, the 3D printer is designed to eliminate material waste. When swapping filaments on a machine with only a single printhead, the old filament needs to be cut before a new one can be loaded, and any residues of the old filament also have to be extruded and discarded. The WonderMaker ZR Ultra 4 renders this flushing process redundant by employing multiple toolheads.

The company claims print speeds of up to 600 mm/s, though such high speeds often results in significantly reduced print quality. The hotend and heated bed can reach temperatures of 300°C (572°F) and 100°C (212°F), respectively. However, because the ZR Ultra 4 is an open 3D printer, wind draughts can have a considerable impact on print quality. The build chamber measures 300 x 240 x 290 mm (11.8 x 9.4 x 11.4 in). The device features a touchscreen and can connect to a smartphone app, enabling users to control and monitor the printing process. The WonderMaker ZR Ultra 4 runs on the open-source Klipper, supports Orca, and also includes its own slicing software. On Kickstarter, backers can order the Ultra version for $699, plus taxes and shipping. The 3D printer is expected to start shipping in August 2025. As always, potential backers should keep in mind that every crowdfunding campaign carries inherent financial risks.