The Factor 4 Plus is UltiMaker's industrial dual-extrusion printer with an insulated, temperature-controlled chamber, 340 °C print cores and a built-in material station for up to six spools. It is for manufacturing, defence and research teams that need traceable parts and 24/7 running.
Connect the Ultimaker Factor 4 Plus to SimplyPrint
Does the Ultimaker Factor 4 Plus 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/S7; nothing confirms the Factor 4 Plus exposes the same local API.
Source
Ultimaker Factor 4 Plus 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
Fully enclosed
Motion system
Other kinematics
Max extruder temperature
340 °C
Has heated bed
Yes
Max bed temperature
120 °C
Heated chamber
Up to 70 °C
Number of nozzles
2
Toolheads
2
Direct drive
Yes
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
Factor 4 Plus
Made by a company from
Netherlands
Launched
May 2026
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 Factor 4 Plus print?
Filament compatibility for the Ultimaker Factor 4 Plus: 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
Great
On the maker's list of materials for this printer.
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 Factor 4 Plus
Choose the Factor 4 Plus when you need production repeatability and process logging, such as in-chamber temperatures up to 70 °C and TRACE reports for compliance. For everyday professional work the UltiMaker S8 or S6 cost less, and they share the 330 x 240 x 300 mm build volume. Because there is no confirmed SimplyPrint connection yet, a farm built around SimplyPrint is not the place for it today.
Pros
Actively temperature-controlled chamber up to 70 °C with a heated bed up to 120 °C and print cores up to 340 °C (UltiMaker).
Automated material handling with low-humidity storage: pre-loading and spool switching for up to six spools (UltiMaker).
UltiMaker TRACE logs extrusion factor, nozzle, chamber and bed temperature for traceability (UltiMaker).
Integrated HEPA filter, emergency stop button and an open-door sensor (UltiMaker).
Direct dual extrusion and a gantry lifetime-tested for 15,000 hours, with a 12-month warranty (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.
Priced by quotation as an industrial machine, and heavy at 120 kg (UltiMaker).
No independent hands-on review found; the claims are UltiMaker's own.
Who it suits
SchoolsCan work
Enclosed with a door sensor, e-stop and HEPA filter, but it is a heavy industrial machine that suits an engineering lab rather than a general classroom.
HobbyistsNot a good fit
Industrial pricing and size far beyond what a hobbyist needs.
BusinessesGreat fit
Built for production with process logging, controlled chamber and a 12-month warranty, though no independent reviews were found.
Print farmsCan work
Designed for continuous 24/7 work, but we cannot yet connect it to SimplyPrint, so you would run it through UltiMaker's software.
Printers like the Ultimaker Factor 4 Plus 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 Factor 4 Plus, 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
Is the Ultimaker Factor 4 Plus compatible with SimplyPrint?
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 Factor 4 Plus, our compatibility check tells you in a few questions how it could connect.
What slicer should I use for the Ultimaker Factor 4 Plus?
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 Factor 4 Plus in it yet.
What filament can the Ultimaker Factor 4 Plus print?
Ultimaker lists PLA, PETG, ABS & ASA, Nylon (PA), Polycarbonate (PC), TPU & flexibles and Carbon-fiber & glass-filled for the Factor 4 Plus.
What is the Ultimaker Factor 4 Plus's bed size and build volume?
The Ultimaker Factor 4 Plus 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.
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