Prusa introduces improved MK3S-3D printer




Czech printer manufacturer Prusa has released a new 3D printer in its popular i3 line. The MK3S is secretly supplied for some time instead of the MK3 model. In addition, the company has renewed its MMU printhead and is advancing the developments of the resin printer.

The Prusa i3 is one of the most copied designs for 3D printers and the founder of the company, Jozef Průša, has officially announced the latest iteration of his printer. The Prusa i3 MK3S follows the MK3 and contains improvements on quite a few points. However, customers who bought a new printer have already been provided with the new model since February 8, and those who have received a printer since January 28 receive a voucher for a free upgrade.

The price of the i3 MK3S is still 769 euros for the kit version . Owners of the MK3 printer can purchase an upgrade kit for their printer for twenty euros. This mainly improves the extruder, or the printhead. The biggest upgrade from the MK3 to the MK3S is that extruder, which is equipped with an improved filament sensor, which must prevent the printer from printing if the supply of filament fails. The new version combines an optical and a mechanical sensor. In addition, the printhead is easier to maintain, replacing the nozzle and the filament guide tube without disassembling the entire printhead. There are several small tweaks that need to improve the print quality and maintenance of the printer, much of which was already available as an incremental update for the MK3 printer.

Prusa i3 MK3S kit

The MMU2 module has also been improved and is being replaced by the MMU2.0S. MMU is Prusa’s name for a filament feeding system with which different filaments can be printed, so that objects with different colors or different materials can be made. With the latest version, this Multi Material Upgrade should prevent filaments from getting confused. The necessary hardware for an upgrade from MMU2 to MMU2.5S is sent free to owners, unless customers want to receive the printed parts from Prusa; that costs twenty euros.

In addition, Prusa has implemented various software improvements, such as the firmware of the printers and the Slic3r PE slicer software, with which print jobs are prepared. A printbed upgrade is still being worked hard and the production capacity of Prusa’s own filament line Prusament is being expanded to meet the demand.

Prusa SL1

Finally, the company indicates that the second internal test round of the Prusa SL1 has been completed. The SL1 is, unlike the fdm printers that Prusa carries so far, a 3D printer that works with resin and a light source to selectively harden that resin. After the internal tests, an external test with fifty beta testers should follow at the end of this month. The actual delivery to customers must follow at the end of March. The discount price for new orders of 1299 euros will remain in force at least until then.


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