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Original Prusa i3 MK3S 3D printer
New product
The Original Prusa I3 MK3S is the successor of the award-winning Original Prusa i3 MK2 3D printer. With the rebuilt extruder, a plethora of sensors and the new magnetic MK52 heatbed with replaceable PEI spring steel print sheet we believe that we've developed our best 3D printer yet!
This is a fully assembled printer. If you're looking for DIY KIT, you can find it here.
We have temporarily disabled new orders of printers with powder-coated sheets until all orders from long-waiting customers will be shipped. More info
Leadtime for new orders: 4 weeks, new orders in March 2019 (help.prusa3d.com/shippingtable)
More info
After more than a year of a continuous development of the Original Prusa i3 MK3 we are introducing MK3S - the enhanced and improved revision of the MK3.
WITH THE ORIGINAL PRUSA i3 MK3S WE ARE INTRODUCING:
NEW FILAMENT SENSOR
The previous sensor didn’t work well with some specific filaments. The new sensor is using the optical sensor which is triggered by a simple mechanical lever. This sensor doesn’t care about the optical properties of the filament and cannot die because of mechanical wear.
BETTER SERVICE & PRINTS
Thanks to completely reworked extruder changing the nozzle or PTFE tube is easier than ever before. As a bonus, the nozzle and the extruder motor is much closer to the X axis, this means less resonance and better prints too. MK3S is also better for printing from flexible materials.
DOZENS OF TWEAKS
MK3S includes all the cumulative upgrades from the entire life cycle of the MK3 like genuine Gates belts, textile sleeves, a new Einsy case for easier Raspberry Pi connection, an anti-rust coating on smooth PEI sheets and, of course, dozens of firmware and plastic parts enhancements.
The Original Prusa i3 MK3/S is the "Best 3D printer" according to All3DP.com and MAKE: Magazine, where MK3/S also received "Editor's Choice" as the highest-rated 3D printer in 2019 Digital Fabrication Guide. The MK3S features a rebuilt extruder, numerous sensors, and various smart features. Plus, a new magnetic MK52 heatbed with replaceable PEI spring steel print sheet. Dozens of various tweaks and upgrades improve the reliability and ease of use. MK3S‘s functionality can be further expended with the unique Multi-Material Upgrade 2S addon for printing with up to 5 materials simultaneously.
WHAT WE ARE PROUD OF...
The most significant features of Original Prusa i3 MK3S
REMOVABLE HEATBED
The new MK52 Magnetic HeatBed holds a replaceable alloy spring steel sheet with a PEI surface. You can choose between two types of sheets - smooth PEI sheet (default option, already available) and textured powder coated PEI (this will be available later).
FRAME STABILITY
With the MK3S we are introducing the reworked Y axis from
SILENT & FASTER PRINTING
Thanks to the new Trinamic2130 drivers and Noctua fan, the MK3S is extremely quiet in the stealth mode. But the MK3S is quieter than 99 % of the available printers, even in the Normal mode. In normal mode, we have also increased the printing speed. Now you can achieve more than 200 mm/s!
POWER PANIC
Have you ever tripped over the extension cord and lost a 20-hours print? MK3S will save you! The printer can fully recover from the loss of power. It detects power interruption and shuts down the heatbed and extruder heating. After restoring the power, you can continue with printing.
FILAMENT SENSOR
With MK3S we are introducing a completely reworked extruder with a new filament sensor. The new sensor is using the optical sensor which is triggered by a simple mechanical lever. This sensor doesn’t care about the optical properties of the filament (it can be completely invisible) and cannot die because of mechanical wear.
PREVENTS SHIFTED LAYERS
The new EINSY RAMBo motherboard with Trinamic drivers not only makes the MK3S silent but it also can detect skipped steps and layer shifting. This is a big step forward in the reliability of the printer and the user comfort. You can say goodbye to ugly prints!
BONDTECH EXTRUDER
The extruder has now upgraded with Bondtech drive gear. It grips the filament from both sides, increasing the push force and making the printer more reliable. This is useful
P.I.N.D.A. 2 PROBE
MK3S has two new thermistors. The first one measures ambient temperature on the electronics, preventing MINTEMP errors in rooms with 15°C or less. The second one is embedded in the new P.I.N.D.A. 2 probe to compensate for temperature drift. So the first layer will always be spot on!
E3D V6 NOZZLE
E3D V6 is market-leading all metal hotend well known for its high-temperature performance. The MK3S utilizes a
Read more about features of our brand new Original Prusa i3 MK3S in the article at PrusaPrinters.org
Check out the official announcement video!
THE INTERNET ABOUT MK3/S
"MK3 - highly recommended. I'm really looking forward to everything this printer does becoming standard everywhere." - more infoThomas Sanladerer
"In short. What I don't like about this printer? The rubber feet. What I like? Absolutely everything else!" - more info 3D Maker Noob
"With it's combination of useful new features, along with the reliability and quality of the prints, this is a 3D printer that, especially in the kit form, offers a great price-performance ratio." - more info GreatScott!
"Using this 3D printer has been a joy and an education. (...) The Original Prusa i3 MK3 is highly, thoroughly, and unreservedly recommended." - more info ALL3DP.com
SEE THE MK3/S IN ACTION!
MK3 interview with Josef by Thomas Sanladerer
MK3 interview with Josef by 3D printing nerd
Josef's improvised presentation of MK3 features
EINSY RAMBO interview with Josef
FULL FEATURES LIST (FEBRUARY 2019 EDITION)
NEW FEATURES
- Removable magnetic spring steel sheet with PEI surface
- Brand new EINSY RAMBo motherboard
- Silent Trinamic drivers with 256
microstepping - Faster printing: 200+ mm/s
- Sensorless homing for X and Y axes
- Detection and recovery of shifted layers
- Improved frame rigidity with
aluminium extrusions - Power loss detection and recovery
- Better cooling from both sides of the object
- Optional WIFI with Octoprint interface included
- Bondtech extruder drive - filament is driven from both sides
- IR filament sensor
- Automatic loading of
filament whenfilament is inserted - Both extruder cooling fan and print cooling fan detect RPM. When extruder fan is blocked, the printer will stop to prevent damage
of extruder. Same appliesfor the print cooling fan. - Extra silent Noctua fan
- New P.I.N.D.A. 2 probe with included thermistor - faster temperature calibration
- Room ambient temperature sensor
BASIC FEATURES
- Great build volume – 11,025 cm3 (25 x 21 x 21 cm or 9,84 x 8,3 x 8,3 in)
- Integrated LCD and SD card controller (8GB included)
- 0.4mm nozzle (easily changeable) for 1.75 mm filament
- Layer height from 0.05 mm
- Automatic mesh bed
levelling - Heatbed with cold corners compensation – for
warpless 3D printing from any material - Automatic skew axes compensation
- Hassle free PEI print surface - no glass, no glue, no ABS juice
- Supported materials – PLA, ABS, PET, HIPS, Flex PP, Ninjaflex, Laywood, Laybrick, Nylon, Bamboofill, Bronzefill, ASA, T-
Glase , Carbon-fibers enhanced filaments, Polycarbonates... - Easy multicolor printing based on layer height
- 1 kg (2 lbs) silver PLA filament included
- Kit box dimensions: 11 kg, 42×43×24 cm; 16.5×16.9×9.5 in (L×H×W)
- Printer dimensions (without spool): 7 kg, 50×55×40 cm; 19.6×21.6×15.7 in (L×H×W)
- Power consumption: PLA settings: 80W / ABS settings: 120W
WHY DO YOU WANT ORIGINAL PRUSA I3 KIT?
Great support
We are an established company founded in 2012, and we work hard to help you start 3D printing as soon as possible. We are providing full 24/7 customer support with live chat and e-mail in several languages. There are also unofficial user groups on Facebook, where makers help each other. You will never be alone in the big world of 3D printing!
The kit comes along with a forum support where our ever growing community can always help, or you can even get in touch with Jo Prusa himself at the very same spot! Check out the forum and regularly updated Knowledge Base!
With 3D printing, buying a printer is just a beginning!
Best assembly instructions and free 3D Printing handbook
We didn't want to leave anything to chance, so our assembly instructions are pictured to the smallest detail.
See the assembly manual for yourself!
All fasteners and mechanical parts have 1:1 drawing so you can easily find them, and there is no chance of you picking a wrong one. You don't have to be MIT graduate to assemble our kit ;-)
Our fastest customer built the kit in 4 hours! Will you beat him?
Ready to print settings
We provide high print settings with the printer, so you don't have to dive into complex new programs the second you finish the build. You can start printing right away, and this gives you a great head start!
These settings are great for all kinds of objects, not just for a couple of prepared showpieces. After a while, when you're familiar with the printer, you can, of course, dive into tinkering ;-)
We are developing our own slicing software. In Slic3r Prusa Edition you can set everything you want. PrusaControl on the other side is focusing on casual users, and it's very easy to use. But of course, we also have the settings for the third party slicers like Simplify3D, Cura, etc
Upgradability
One of the most popular features of Original Prusa i3 concept is upgradability. If you buy our 3D printer, you can upgrade it later to the new version, so you don't need to buy the whole new model every two years as you get used to for example with your phone or laptop. :-)
Upgrades are a great way not only for saving money, but also to learn about the construction of the printer's hardware. We are constantly improving our technology. A few years ago there was the Original Prusa i3 3mm which was upgradable to the Original Prusa i3 Plus 1.75mm (MK1). This printer can become MK2S thanks to the next big upgrade and then you can go even for the latest MK3S (or MK2.5S if you wish).
Ready for the Multi Material Upgrade 2S
Original Prusa i3 MK3S
Multi-material could be your next step in the 3D printing world and MK3S is completely ready for the upgrade.
BTW: Do you know, that you can easily print soluble interface supports with
Quality guaranteed by Josef Prusa & Prusa Research
Prusa Research is a 3D printing company based in Prague, Czech Republic. It was founded by Josef Prusa, one of the core developers of the Open Source project RepRap, in 2012 as a one-man startup and grows to a 160+ team now.
The open-sourced Prusa i3 design is according to 3DHubs the most used 3D printer in the world.
Today we are shipping more than 6000 Original Prusa i3 printers per month to over 120 countries directly from Prague.
 Original Prusa i3 MK3S |  Original Prusa i3 MK2S |  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 | 25 x 21 x 20 cm | 9.84 x 8.3 x 8 | 25 x 21 x 21 cm | 9.84 x 8.3 x 8.3 in |
| Layer height | 0.05 – 0.35 mm | 0.05 – 0.35 mm | 0.15 – 0.35 mm |
| Speed | 200+ mm/s | 100 mm/s | 200+ mm/s |
| Max hotend/heatbed temp. | 300 °C / 120 °C (572 °F / 248 °F) | 300 °C / 120 °C (572 °F / 248 °F) | 300 °C / 120 °C (572 °F / 248 °F) |
| Print surface | removable magnetic heatbed / PEI spring steel sheets | heated with cold corners compensation / PEI hassle free | removable magnetic heatbed / PEI spring steel sheets |
| Number of materials (simultaneously) | 1 | 1 | 5 |
| Supported materials | Any thermoplastic including Nylon and Polycarbonate | Any thermoplastic including Nylon and Polycarbonate | Any thermoplastic including soluble supports - PVA, BVOH... |
| Special features | Bondtech gears, Noctua fan, extra silent Trinamic drivers | - | Direct drive extruder, filament cutter, reduced wipe tower - wipe into infill/object, manual controls, finishing filament scraps |
| Filament sensor | Yes (IR) | No | Yes (mechanical) |
| Power panic | Yes | No | Yes |
| Octoprint compatibility | Yes | Yes | Yes |
| Advanced sensors | 4 thermistors, fans sensor, shifted layers | 2 thermistors | 4 thermistors, fans sensor, shifted layers |
| Calibration | automatic 9 points XYZ / skew axes compensation | automatic 9 points XYZ / skew axes compensation | automatic 9 points XYZ / skew axes compensation |
| Kit price | 769€ VAT incl. or $749 | 619€ VAT incl. or $599 | 299 € VAT incl. or $299 |
| Assembled printer price | 999€ VAT incl. or $999 | 919€ VAT incl. or $899 | - |
| E-shop link |  |  |
Data sheet
| 3D printers | MK3 |
Reviews
Besdt printer ever
I´ve using Mk3 since may.
More than 825 hours and 1352 meters of filament and still working like first day. Prusa proud!
- 2 out of 2 people found this review useful.