The S6 is UltiMaker's professional dual-extrusion desktop printer with swappable print cores, a flexible PEI plate and a partly enclosed chamber. It is for engineering teams, studios and schools that want a dependable, easy-to-run printer with a wide material range.
Does the Ultimaker S6 3D printer work with SimplyPrint, OctoPrint, Mainsail and Fluidd?
Each way of connecting it, what it needs, and how to set it up.
SimplyPrint Client
Expected to work
The SimplyPrint Client's UltiMaker integration covers the S3, S5 and S7 (local HTTP API). The S6 and S8 run a different firmware that UltiMaker says is not compatible with the S3/S5/S7's; whether its local API is the same is unconfirmed.
Source
UltiMaker S-line printers take jobs over the network or from a USB drive; no USB serial printing is documented (the S7's manual shows a host port only).
Source
Ships UltiMaker's own closed firmware; no Klipper, and no known route to install it.
Source
What works with SimplyPrint
Connected through SimplyPrint Client, SimplyPrint is expected to cover the core of what it offers on the Ultimaker S6: the camera and AI failure detection, remote printing, skipping objects and AutoPrint. Not available through SimplyPrint Client: change temperatures, extrude and retract, change print speed, fan speed, baby stepping, send G-code, change filament, bed leveling and Z-Offset Calibration.
Every SimplyPrint feature, for each way of connecting it to SimplyPrint
Connected to SimplyPrint through
SimplyPrint feature
SimplyPrint Client
Expected to work
Monitoring
Live status and progress
Yes
Webcam
Yes1
AI failure detection
Yes1
Time left
Yes
Layer progress
Yes
Temperatures
Yes
Printing
Starting a print
Yes
Pause, resume and cancel
Yes
Skip objects
Yes
Files
Print UFP files
Yes
Printer control
Change temperatures
No
Moving with the controls
Yes
Homing
Yes
Extrude and retract
No
Change print speed
No
Fan speed
No
Baby stepping
No
Send G-code
No
Calibration
Change filament
No
Bed leveling
No
Z-Offset Calibration
No
Automation
AutoPrint
Pro
Yes
Download the file before the print starts
Yes
Connected to SimplyPrint through SimplyPrint Client
Expected to work
Monitoring
Live status and progressYes
WebcamYes1
AI failure detectionYes1
Time leftYes
Layer progressYes
TemperaturesYes
Printing
Starting a printYes
Pause, resume and cancelYes
Skip objectsYes
Files
Print UFP filesYes
Printer control
Change temperaturesNo
Moving with the controlsYes
HomingYes
Extrude and retractNo
Change print speedNo
Fan speedNo
Baby steppingNo
Send G-codeNo
Calibration
Change filamentNo
Bed levelingNo
Z-Offset CalibrationNo
Automation
AutoPrint ProYes
Download the file before the print startsYes
Works
Depends
Not supported
Needs a camera
What slicer to use for the Ultimaker S6
Use Cura, Ultimaker's own slicer: it has a ready-made profile for the Ultimaker S6.
We only list slicers you can use in the SimplyPrint cloud, so there may be others for the Ultimaker S6.
Cloud-Based Slicer for Ultimaker S6: Use Cura Online
Use Cura and other slicers - directly in your browser with SimplyPrint's online cloud slicer. No installation required. Slice your Ultimaker S6 models from any device, anywhere in the world!
Automatic Profile Updates: Profiles are automatically checked and fetched from the slicer GitHub repositories every day, as well as from our own open-source community-driven slicer profile database. This ensures you always have access to the latest profiles.
Note: Other slicers, such as Simplify3D, ideaMaker, SuperSlicer and KISSlicer, aren't in our cloud, so we don't track their profiles. They may still work well with your Ultimaker S6: check the slicer's own documentation or forums for a profile. You can also contribute profiles to our open-source slicer profile database on GitHub.
The app for the Ultimaker S6
Use SimplyPrint as the app for your Ultimaker S6: watch and run it from your phone or any browser, slice in the cloud, and keep it next to your other printers. It's free to start. Ultimaker's own app is UltiMaker Digital Factory.
There's no plate swapper or auto-ejection kit for the Ultimaker S6 in SimplyPrint yet, but AutoPrint can still keep it printing: once the plate is clear, it starts the next job from your queue.
Ways to automate it
Your own ejection G-codeWrite the routine that clears your plate, and AutoPrint runs it after every print.
Ultimaker S6 specifications: bed size, print height and more
Its size, temperatures, multi-material and how it connects, from the maker and our own research.
Read more by the manufacturer
Size
Build volume
330 x 240 x 300 mm
Bed type
Rectangle
Bed size
330 x 240 mm
Max print height
300 mm
Printing
Enclosure
Partly enclosed
Max print speed
500 mm/s
Max extruder temperature
340 °C
Has heated bed
Yes
Max bed temperature
100 °C
Number of nozzles
2
Toolheads
2
Direct drive
No
Probing tool / Auto Bed Leveling
Yes
Filament width
2.85 mm
Multi-material
Toolchanger or hotend changer
No
IDEX (independent dual extruders)
No
Connecting
Connectivity
Wi-Fi, Ethernet, USB
Supports serial printing
No
Shipped firmware
The maker's own
Files and slicing
Supported file formats
G-code (.gcode, .gco, .g)
Special formats: ufp
The printer
Printer manufacturer / brand
Ultimaker
Printer model name
S6
Made by a company from
Netherlands
Launched
June 2025
Still made
Yes
Disclaimer:
We strive to keep this information as current and accurate as possible, but cannot guarantee its completeness or reliability. Our data is based on user submissions and manufacturer references.
What filament can the Ultimaker S6 print?
Filament compatibility for the Ultimaker S6: the materials Ultimaker lists for it.
Filament
Suitability
Notes
PLA
Great
On the maker's list of materials for this printer.
PETG
Great
On the maker's list of materials for this printer.
TPU & flexibles
Great
On the maker's list of materials for this printer.
ABS & ASA
Great
On the maker's list of materials for this printer.
Nylon (PA)
Great
On the maker's list of materials for this printer.
Polycarbonate (PC)
Great
On the maker's list of materials for this printer.
Carbon-fiber & glass-filled
With care
Possible if you fit a hardened or wear-resistant nozzle - the abrasive fibers quickly wear a stock brass nozzle.
Tip: this is a general guide from the printer's specs - always check your filament's recommended settings. With SimplyPrint you can save a profile for each spool and track exactly what filament you have in stock.
Best filament for the Ultimaker S6
Filaments the Ultimaker S6 prints well, Ultimaker's own first, then the best known.
Choose the S6 when you want UltiMaker's ecosystem (Cura, Digital Factory, 301+ materials) at the lower end of the S series and can live with a partly enclosed chamber. The UltiMaker S8 is the step up if you want the fully enclosed build chamber and an integrated EPA filter; the S6 only has an optional Air Manager. We cannot yet connect it to SimplyPrint, so check that matters to you first.
Pros
Dual extrusion with swappable print cores, and 301+ compatible materials including optional composite and metal cores (UltiMaker).
Up to 500 mm/s travel speed and 50,000 mm/s2 acceleration from the Cheetah motion planner (UltiMaker).
Flexible PEI-coated steel plate that releases parts easily, with an optional glass plate (UltiMaker).
Works with the Material Station for longer unattended runs and the optional Air Manager with an EPA filter (UltiMaker).
12-month warranty and Wi-Fi, Ethernet and USB connections (UltiMaker).
Cons
No confirmed way to connect it to SimplyPrint: Klipper is not possible and OctoPrint is unlikely, and our SimplyPrint Client status is unknown.
Only partly enclosed and passively heated, so ABS and nylon are not as well served as on a fully enclosed printer; the filter is an optional extra.
Wi-Fi is 2.4 GHz only (UltiMaker).
No independent hands-on review found for the S6 itself; claims are UltiMaker's own.
Who it suits
SchoolsGood fit
Easy to run and well supported with a warranty; the partly open chamber and the lack of a confirmed SimplyPrint connection are the drawbacks.
HobbyistsCan work
Capable, but priced for professionals and tied to UltiMaker's ecosystem.
BusinessesGood fit
Dual extrusion, many materials and a warranty suit prototyping and tooling work.
Print farmsCan work
The Material Station allows longer unattended runs, but we cannot yet connect it to SimplyPrint.
Printers from the same maker, of a similar size, printing the same engineering materials or multi-material like it, that you can buy today. Compare up to four side by side, with their specs and how each connects.
Who makes the Ultimaker S6, and how open Ultimaker leaves you: whether its printers run without its cloud, take any filament and slicer, and can be repaired. Each area is rated from public sources.
Openness: Mixed (2.9 of 5)
Mixed
Walled gardenOpen
UltiMaker is the company formed in 2022 when the Dutch printer maker Ultimaker, founded in 2011, merged with MakerBot. It sells professional desktop and industrial printers (the S series, Factor 4, MakerBot Method and Sketch) to businesses, engineering teams and schools, and develops the open-source Cura slicer and the Digital Factory cloud platform.
Founded:
2011 ·
Headquarters:
Zaltbommel, Netherlands, and New York, USA ·
Ownership:
Privately held; at the 2022 merger NPM Capital held the majority and Stratasys a minority stake ·
Website:ultimaker.com
UltiMaker is mixed: Cura and material choice are open, and printers can be used on the local network, but the printer firmware is closed and most management features sit in its Digital Factory cloud.
Firmware and custom firmware ●●●●●
The printers' own software is not published: UltiMaker's GitHub has its Linux kernel configuration and Cura, but no printer firmware. We found no documented way to run custom firmware on current S-series or Method printers.
[1][2]
Local control and integrations ●●●●●
Cura can add an S-series printer on the local network, by discovery or IP, without signing in, and start prints. UltiMaker says most features are only available through its Digital Factory cloud, and the API it documents publicly is that cloud API; we found no public documentation for controlling the printers locally.
[3][12]
Third-party filament, slicers and parts ●●●●●
Cura is open source and widely used with other brands, and UltiMaker lists over 300 materials, including third-party ones, for the S series. Print cores and the Material Station are UltiMaker's own parts.
[2][4]
Repairs and spare parts ●●●●●
UltiMaker publishes maintenance schedules for the S series and sells part bundles and maintenance kits, and gives an expected printer lifetime of five years at 1,500 printing hours a year.
[5]
Data and privacy ●●●●●
Local printing needs no account; Digital Factory needs one. UltiMaker's privacy policy says data is stored and processed in the EEA or the United States depending on the user's region.
[6][3]
Community and documentation ●●●●●
Cura is developed in public on GitHub with a large open issue tracker, and UltiMaker runs a community forum and support knowledge base. Printer internals are not documented publicly.
[2][3]
Pros
Cura is open source and works with printers from many brands.
Wide material choice on the S series, including third-party materials.
Printers can be used on the local network without an account.
Published maintenance schedules and maintenance kits for long service life.
Cons
Printer firmware is closed.
Most fleet and management features need the Digital Factory cloud, with paid tiers.
MakerBot CloudPrint was shut down in 2025, forcing users to move platforms.
Print cores and the Material Station are UltiMaker-only parts.
Track record
May 21, 2026: UltiMaker launched the Factor 4 Plus, an industrial printer up to twice as fast as the Factor 4, with TRACE print validation for production and defence customers.
[7]
February 2026: UltiMaker sold the Thingiverse model platform to MyMiniFactory and archived its Thingiverse forum.
[8]
December 2025: UltiMaker shut down MakerBot CloudPrint in early December 2025. Users had to reconnect printers to Digital Factory, with a free year of its premium tier offered to former CloudPrint users; the Replicator+ cannot be networked in Digital Factory.
[9]
May 2022: Ultimaker and Stratasys' MakerBot announced a merger backed by $62.4 million from NPM Capital and Stratasys, with co-CEOs from both companies and headquarters in the Netherlands and New York. The combined company took the UltiMaker name.
[10][11]
Researched from 12 sources, last checked October 18, 2026. Show sources
Most likely. We expect the Ultimaker S6 to connect to SimplyPrint via SimplyPrint Client, but nobody has confirmed it yet. If you have one, the setup guide shows within minutes whether it works, and your answer confirms it for everyone.
How do I connect the Ultimaker S6 to SimplyPrint?
Follow our step-by-step setup guide for the Ultimaker S6. It shows how to connect it via SimplyPrint Client, what you need for each, and which to pick.
What slicer should I use for the Ultimaker S6?
We recommend Cura for the Ultimaker S6. You can run it, and 6 other slicers, directly in SimplyPrint's online slicer - no install, on any device, with profiles for the Ultimaker S6 kept up to date automatically.
Can I use OrcaSlicer with the Ultimaker S6?
Yes, but OrcaSlicer has no built-in profile for the Ultimaker S6 that we know of: start from a similar printer's profile and set the bed size, height and nozzle to match.
What filament can the Ultimaker S6 print?
Ultimaker lists PLA, PETG, ABS & ASA, Nylon (PA), Polycarbonate (PC) and TPU & flexibles for the S6.
Does the Ultimaker S6 work with OctoPrint or Klipper?
Not that we know of, but you don't need either: SimplyPrint connects to the Ultimaker S6 via SimplyPrint Client.
What is the Ultimaker S6's bed size and build volume?
The Ultimaker S6 has a 330 x 240 mm print bed and prints up to 300 mm tall, a build volume of about 330 x 240 x 300 mm. See the full specifications table above for bed type, temperatures and more.
When did the Ultimaker S6 come out?
Ultimaker launched the S6 in June 2025.
Can the Ultimaker S6 eject prints automatically?
There's no kit for it that we support yet, but SimplyPrint's AutoPrint can run your own ejection G-code, work with a robot arm through the API, or wait for you to clear the plate, and then start the next job from your queue.
Where can I buy the Ultimaker S6?
From Ultimaker's own store, which has shops for the US. The links on this page go to those stores; some are affiliate links, so we may earn a commission at no extra cost to you.
Affiliate disclosure: Some links on this page are affiliate links. We may earn a commission if you make a purchase, at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases.
Netherlands
SimplyPrint Client 
PrusaSlicer
OrcaSlicer
BambuStudio
ElegooSlicer
CrealityPrint
Kiri:Moto
Best for USA: Ultimaker's store for the US