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
Not confirmed yet - help us find out
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
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)
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.
When to choose the Ultimaker S6
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 like the Ultimaker S6 that work with 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 and that we know work with SimplyPrint.
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
We don't know yet. SimplyPrint works with 130+ brands and 600+ models via OctoPrint, Klipper and built-in integrations; if you have a Ultimaker S6, our compatibility check tells you in a few questions how it could connect.
What slicer should I use for the Ultimaker S6?
Use Cura, Ultimaker's own slicer, made for its printers. You can run it in SimplyPrint's online slicer; there's no ready-made profile for the Ultimaker S6 in it yet.
What filament can the Ultimaker S6 print?
Ultimaker lists PLA, PETG, ABS & ASA, Nylon (PA), Polycarbonate (PC) and TPU & flexibles for the S6.
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.
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.
Netherlands
PrusaSlicer
OrcaSlicer
BambuStudio
ElegooSlicer
CrealityPrint
Kiri:Moto
Best for USA: Ultimaker's store for the US