INTRODUCING THE ORIGINAL PRUSA I3 MK3S+ 3D PRINTER!
The MK3S+ is available as an assembly kit, which is the best way to get to know your new 3D printer. Assemble it screw by screw to learn truly everything about its design and how it works! You can also get it fully assembled and factory tested, so all you need to do is to unpack it and plug it in.
Thanks to all of these (and many other) features, the MK3S became the “Best 3D Printer” according to ALL3DP. The MK3S is also the highest-rated 3D printer, and the “Editor’s Choice”, in the prestigious MAKE:MAGAZINE’s Digital Fabrication Guide 2019. The MK3S is also featured in TechRadar’s Best 3D printers of 2021 as The best all-around 3D printer. NY Times wrote that “…of the 11 printers we’ve tested over the past five years, the Prusa i3 MK3S printer has produced the largest and best-looking prints.” According to ZDNet, the MK3S is “The best pro-sumer 3D printer under 1000 USD.”
The functionality of the MK3S+ can be further enhanced by our unique Multi-Material Upgrade 2S for printing with up to 5 filaments simultaneously.
WHAT’S NEW IN THE MK3S+
SUPERPINDA PROBE
SuperPINDA probe features a hiqh-quality sensor for a fully-automatic Mesh Bed Leveling process. Before every print, the MK3S+ probes the bed in several places and creates a virtual heightmap of the print area. This process ensures that the first layer will always be spot on!
MISUMI BEARINGS & MORE
The MK3S+ features a new set of metal clips for the genuine MISUMI bearings on the Y-axis. The belt tensioning mechanism on the X-axis was reworked and the X-end plastic parts reinforced. The filament path in the extruder was altered for better support of flexible filaments.
DOZENS OF TWEAKS
With all the cumulative upgrades from the entire MK3’s life cycle on board, the MK3S+ is the best version of our award-winning 3D printer so far. Genuine Gates belts, Bondtech drive gears, EINSY RAMBo motherboard, IR filament sensor, and many other features are the reason why the MK3S+ is the perfect 3D printing workhorse.
FULL FEATURES LIST (APRIL 2021 EDITION)
BASIC INFORMATION
- Build volume: 25×21×21 cm (9.84″×8.3″×8.3″)
- Layer height: 0.05 – 0.35 mm
- Nozzle: 0.4mm default, wide range of other diameters/nozzles supported
- Filament diameter: 1.75 mm
- Supported materials: Wide range of thermoplastics, including PLA, PETG, ASA, ABS, PC (Polycarbonate), CPE, PVA/BVOH, PVB, HIPS, PP (Polypropylene), Flex, nGen, Nylon, Carbon filled, Woodfill and other filled materials.
- Max travel speed: 200+ mm/s
- Max nozzle temperature: 300 °C / 572 °F
- Max heatbed temperature: 120 °C / 248 °F
- Extruder: Direct Drive, Bondtech gears, E3D V6 hotend
- Print surface: Removable magnetic steel sheets with different surface finishes, heatbed with cold corners compensation
- Safety features: IR filament sensor, high-quality Delta PSU with Power Panic, 3 thermistors, RPM monitoring
- LCD Screen: Monochromatic LCD
- Kit box shipping dimensions: 9 kg (volumetric weight), 24×42×43 cm; 9.5×16.5×16.9 in (X×Y×Z)
- Assembled printer box shipping dimensions: 27 kg (volumetric weight), 54×52×48 cm; 21×20.5×18.9 in (X×Y×Z)
- Printer dimensions (without spool): 7 kg, 50×55×40 cm; 19.6×21.6×15.7 in (X×Y×Z)
- Power consumption: PLA settings: 80W / ABS settings: 120W
* Consumable parts, such as PEI sheets (smooth, textured, etc.) are not covered by warranty as the coatings are designed to diminish over time unless failure has occurred due to a defect in materials or workmanship. Cosmetic damage, including but not limited to scratches, dents, cracks, or other cosmetic damage is also not covered by the warranty. Only defective sheets on arrival are covered by warranty.
ADVANCED FEATURES
- Controller: EINSY RAMBo 8-bit board with Trinamic 2130 drivers (256 microstepping), co-developed with Ultimachine, sensorless homing for X and Y axes
- Mesh Bed Leveling: Advanced high-quality SuperPINDA sensor (Super Prusa INDuction Autoleveling sensor)
- Print sheet profiles: Firmware supports print sheet profiles to store Live Z calibration data to enable quick switching between different print sheets.
- Filament sensor: IR sensor built-in, supports filament auto-loading. Print pauses when filament runs out.
- Power Panic: Hardware-based, single G-code line accuracy
- Ethernet connection: via Raspberry Pi (optional)
- Wi-Fi connection: via Raspberry Pi (optional)
- Advanced sensors: 3 thermistors, fans RPM monitoring, SuperPINDA
- Calibration: Automatic, Mesh Bed Leveling, SelfTest
- Print medium: SD card (16 GB card included)
- Firmware update: via PC (USB cable)
- PSU: Custom-made Delta PSU with hardware-based power panic
- Advanced features: Automatic filament loading, steel sheet profiles, Octoprint compatibility and more
- New features introduced through firmware upgrades
6 REASONS TO BUY THE MK3S+
1GREAT USER SUPPORT
We offer 24/7 tech support via live chat and email in seven languages. Our printers come with detailed instructions and guides for easy assembly and maintenance. You can also visit our knowledge base, community forum, Facebook groups and official Blog, where we publish useful 3D printing tips and tricks, contests and more!
2FUN TO ASSEMBLE
The MK3S+ assembly kit is an excellent first step into the world of 3D printing. You will get to know your 3D printer inside out and find out how it works! The assembly is quite easy, requires no soldering, all cables are cut to length and ready to be plugged in. The assembly instructions are easy to follow and all texts are translated into 8 languages. All of this makes the kit very friendly to younger builders, too!
3BUILT-IN SAFETY FEATURES
Original Prusa 3D printers are well-known for their reliability and safe operation. Every part of our printers is thoroughly tested in-house. The MK3S+ is equipped with three thermistors and comes with a custom-built high-quality Delta power supply. The printer can recognize issues with heating and stop operation to prevent damage.
4OPEN-SOURCE AND COMMUNITY-FRIENDLY
All parts of our printer are open-source, which means we publish all source codes and blueprints online. The community around our products is huge and the feedback is overwhelmingly positive – don’t believe us? Check out Facebook groups and YouTube videos! There’s so much to do with your 3D printer – buying it is just the beginning!
5READY FOR THE MULTI MATERIAL UPGRADE 2S
Multi Material Upgrade 2S is our unique add-on option for printing with up to 5 different filaments simultaneously. Multi-material could be your next step in the 3D printing world and the MK3S and MK3S+ are completely ready for the upgrade! MMU2S also allows you to print a soluble support interface – check out the video!
6UPGRADABILITY
One of the most popular features of the Original Prusa i3 concept is upgradability. When you buy our 3D printer, you can upgrade it later to a newer version, so you don’t need to buy a whole new model every two years like, for example, your phone or laptop. We also keep supporting our 3D printers with regular firmware updates that bring new features!
 ORIGINAL PRUSA I3 MK3S+ |
 ORIGINAL PRUSA MINI+ |
 ORIGINAL PRUSA I3 MK3S+ MULTI MATERIAL UPGRADE 2S |
|
| Build volume | 25 x 21 x 21 cm | 9.84 x 8.3 x 8.3 in | 18 x 18 x 18 cm | 7 x 7 x 7 in | 25 x 21 x 21 cm | 9.84 x 8.3 x 8.3 in |
| Layer height | 0.05 – 0.35 mm | 0.05 – 0.25 mm with 0.4 mm nozzle | 0.15 – 0.35 mm |
| Max travel speed | 200+ mm/s | 200+ mm/s | 200+ mm/s |
| Max hotend/heatbed temp. | 300 °C / 120 °C (572 °F / 248 °F) | 280 °C / 100 °C (536 °F / 212 °F) | 300 °C / 120 °C (572 °F / 248 °F) |
| Mainboard | Einsy RAMBo 8-bit board with Trinamic 2130 drivers co-developed with Ultimachine | Custom 32-bit Buddy electronics with STM32 and latest Trinamic 2209 silent stepper drivers | Einsy RAMBo 8-bit board with Trinamic 2130 drivers co-developed with Ultimachine |
| MMU2S support | Yes | No | Yes |
| Extruder | Direct drive | Bowden system with 3:1 gearing | Direct drive |
| LCD screen | Monochromatic LCD | 2.8″ graphic 65k color screen | Monochromatic LCD |
| Print surface | magnetic heatbed with removable PEI spring steel sheets | magnetic heatbed with removable PEI spring steel sheets | magnetic heatbed with removable PEI spring steel sheets |
| Filament diameter | 1.75mm | 1.75mm | 1.75mm |
| Number of materials (simultaneously) | 1 | 1 | 5 |
| Nozzle diameter | 0.4mm (default) / other nozzle diameters supported | 0.4mm (default) / other nozzle diameters supported | 0.4mm (default) / other nozzle diameters supported |
| Supported materials | Any thermoplastic including Nylon and Polycarbonate | Any thermoplastic except Carbon filled | PLA, ABS, PETG, BVOH, PVA |
| Filament sensor | Yes (IR) | Optional upgrade | Yes (mechanical) |
| Power panic | Hardware-based, single G-code line accuracy | Future software upgrade, single layer accuracy | Hardware-based, single G-code line accuracy |
| Ethernet connection | Via Raspberry Pi | Yes | Via Raspberry Pi |
| Wi-Fi connection | Via Raspberry Pi | Separate future upgrade (ESP Wi-Fi module) | Via Raspberry Pi |
| Advanced sensors | 3 thermistors + SuperPINDA, fan RPM sensors | 3 thermistors + SuperPINDA, fan RPM sensors | F.I.N.D.A |
| Farm mode | No | Yes (upcoming feature) | No |
| Calibration | Automatic, Mesh Bed Leveling | Automatic, Mesh Bed Leveling | Automatic, Mesh Bed Leveling |
| Print medium | SD card | USB drive / LAN | SD card |
| Firmware update interface | USB port | USB drive / LAN | USB port |
| Power supply | 240W, custom made by Delta with Power Panic HW | 160W, external adapter by Mean Well or Delta depending on the region | 240W, custom made by Delta with Power Panic HW |
| Kit price | 749 USD / 769 EUR (VAT incl.) | 349 USD / 379 EUR (VAT incl.) | 299.00 USD / 299 EUR (VAT incl.) |
| Assembled printer price | 999 USD / 999 EUR (VAT incl.) | 399 USD / 419 EUR (VAT incl.) |
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Jessica klint –
I had a Cr-10 for over 2 years before buying the Prusa, but it was more a project than a printer. I probably fixed more than printing. But the Mk3s+ is insane! Its a powerhorse, reliable, I start a print and come back after some hours and it’s perfect! It’s so good
Wayne Paul –
Had no experience whatsoever bought the kit as a project for son(14) and i to assemble. Could not be more pleased the instructions were amazingly well done. I needed 0 online support to go from pile of bags and parts to z calibration and then our first print (benchy duh). Never even needed to open the spare parts bag. Dont be scared of the scope or complexity, build this thing yourself even if your not mechanically inclined. the instructions break it down into easy steps. Was a fun time building it and now we know every little bit gear nut belt etc of this machine. Hats off to mr prusa and all his crew.
Felix –
I have an expensive desk ornament that I have spent about 10 hours trying to calibrate today. I made the mistake of trying to change the nozel after my first few prints. Now it wont print straight. And I get a generic check the manual error. The manual is not helpful at all. Boy do I regret this decision. All my fears of a delicate complicated instrument came true. I wish I could call customer service. This is driving me crazy.
Sally Krit –
I took about 9 hours over four nights to assemble the kit. I didn’t hurry and carefully read the online assembly manual and the user contributed comments (essential reading). The printer self tested flawlessly, and I’ve been printing PLA and PETG models for several weeks now with no problems, apart from one first layer adhesion problem while I was getting the Live Z right in the beginning. Very high quality prints. Surpringly quiet machine, and that’s not even on stealth mode. I’ve installed an X motor cable strain relief mod because I didn’t like the angle of the wires as they exit the X motor, although I haven’t heard of any X cabling failures. Overall I am extremely happy with this printer.
Noah –
Got this as an upgrade over my old MK2S and while the printer technically works fine, is a lot quieter than the old one and e.g. the filament-sensor is nice, the print-quality leaves me disappointed. The issue is that my printer exhibits this rather strong, ugly vertical banding and it seems this issue is rather common — Google indicates that people have taken to calling it “VFA.” There’s also seemingly no good fix for it; apparently the only fix is custom firmware and new, different motors! With worse print-quality than my old MK2S, this is a downgrade, not an upgrade.
Maark Lauin –
Putting together this was fantastic! The guide and added goodies were great! My satisfaction was kicked up to the next level because they not only suggested a reward system for making the printer, but they included the treat!!! Such a simple item to include that really made me think they company cares about their customers.
Xafit wenki –
The MK3S+ kit is a marvel. The assembly process went well due to the well-written instruction manual. The most difficult part was finding a flat surface! Tables, countertops, work benches – all had some sort of flaw. I found that the 24″ tiles on the floor of our guest bath were the flattest surface I could find. The only thing better would be an industrial granite surface table. I ordered the kit with the textured steel sheet, which the supplied PLA would not adhere to without using glue stick. Once I started using glue stick, prints came out perfectly! The 3D-printed components of the printer kit are a great example of the capabilities of 3D printing. I am new to this technology, so my learning curve will be steep.
clientservice –
Received the kit 24 months ago and have been happily printing ever since. took me 12 hours to very carefully assemble. I use glue stick quite often as many parts I print have a very small footprint. I have discovered that it I wet the build plate(off the machine) to dilute the old glue stick and then let it dry(preheat) It leaves an almost invisable coating that works killer but easily releases with no evidence of using glue stick
clientservice –
I’ve had my Prusa i3 MK3S+ (Kit) for a little over a year now. I’m a 72 year-old retired Engineer, and the assembly was straight-forward and easy. I DID take 1-1/2 days assembling it, going over everything two or three times before doing something. But it was worth it, the machine fired right up the first time, with no problems. Since then, I have printed hundreds, maybe thousands of all sorts of things, out of ABS, TPU, PETG, PLA, and Polycarbonate. The machine has performed perfectly. It now has over 6000 printing hours, and has printed over 46 spools of filament. Yes, some parts have died, which is to be expected; I replaced the LCD screen and the hot end, and a dozen or so nozzles. But, that’s why I bought this printer; it is easy to buy parts for, and easy to repair. I DO keep it clean, and all printing is done inside an IKEA Lack enclosure I made using PRUSA gcode files for the ‘hardware’. I also keep it lubricated, applying a little silicon grease to the rods as needed. I researched for over 6 months to decide which printer to get. After a year, I am 100% confident that I made the right choice. This is the perfect printer to start 3D printing, which is UNBELIEVABLY FUN!!! GREAT printer!
clientservice –
I just recently built this printer and have been using it nonstop for a week. This is my first 3D printer and 3D printing experience. The build went smooth as the instructions were great as far as I am concerned (I do have a decent mechanical aptitude however and it took me about 8 hours, 9 if you count calibrating and first print verification) . The multi color arrows are the key to putting things in the correct location. The prints have been great fresh from the build. Great quality parts with just a slight learning curve on how to print (had some difficulty with first layers sticking) which were solved with the 3D printing handbook included. So far so good. I have to say this printer is great quality. Love the open source software and components on everything as well!
clientservice –
I now own two of these, and they have probably been the absolute best investment in my small business! They save so much time not having to level the bed, and they can hold some pretty impressive tolerances. I’ve ran these machines non stop for 4 days, and they handle it like a champ! They have hundreds of hours on them now, and I have had to do VERY little maintenance on them so far. There is a reason I bought this printer over other competitors, and that is because if Prusa is using them to run their business, why can’t I? Don’t be fooled by other cheep printers. This thing is the real deal, and it won’t disappoint.
clientservice –
Ironic, but the complaint I have is about the ‘printed’ or ‘moulded’ parts for the self-assembly MK3S+ kit. First of all forget that rubbish about assembling the machine in 8 hours. You will be let down by the instruction manual which gives instructions like ‘… fit the 2 M3 x 10 screws into the 2 holes. Err… which holes. The photographs in the instruction manual are far too small, and you will need a magnifying glass to really discern the pars in some photographs. Back to the printed parts. I sugges Prusa do not use ‘high gloss’ filament. When you are trying to see anything small in a printed part, and you’re using a torch for light, the light bounces back off the high gloss. All in all, I honestly could write/produce a better manual. And who needs Haribo gums?! Finally, the machine is well made, but, the irony is the printed parts aspect of the machine.
clientservice –
These Haribo Gummy bears are quite expensive, but they do come with a free 3D printer. Probably one of the best 3D printer for the price. Absolute unit of a machine. Love it!