Does the Two Trees SK1 3D printer work with SimplyPrint, OctoPrint, Mainsail and Fluidd?
Each way of connecting it, what it needs, and how to set it up.
Ships Klipper with Moonraker and Fluidd: the maker's firmware guide says to open the Fluidd page at the printer's IP (MKS SKIPR board, KlipperScreen-style UI).
Source
What you need: Nothing extra: the printer runs Klipper as it ships
Ships Klipper; OctoPrint only on top of it.
Source
Ships with Klipper: OctoPrint only runs on top of it, through the OctoKlipper plugin
What works with SimplyPrint
Connected through Klipper (Moonraker), SimplyPrint supports most of what it offers on the Two Trees SK1: the camera and AI failure detection, remote printing, skipping objects, temperature and movement control and AutoPrint. Not yet in SimplyPrint through Klipper (Moonraker): download the file before the print starts.
Every SimplyPrint feature, for each way of connecting it to SimplyPrint
Connected to SimplyPrint through
SimplyPrint feature
Klipper (Moonraker)
Compatible
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
Printer control
Change temperatures
Yes
Moving with the controls
Yes
Homing
Yes
Extrude and retract
Yes
Change print speed
Yes
Fan speed
Yes
Baby stepping
Yes
Send G-code
Yes
Calibration
Change filament
Yes
Bed leveling
Yes
Z-Offset Calibration
Yes
Automation
AutoPrint
Pro
Yes
Download the file before the print starts
No2
Connected to SimplyPrint through Klipper (Moonraker)
Compatible
Monitoring
Live status and progressYes
WebcamYes1
AI failure detectionYes1
Time leftYes
Layer progressYes
TemperaturesYes
Printing
Starting a printYes
Pause, resume and cancelYes
Skip objectsYes
Printer control
Change temperaturesYes
Moving with the controlsYes
HomingYes
Extrude and retractYes
Change print speedYes
Fan speedYes
Baby steppingYes
Send G-codeYes
Calibration
Change filamentYes
Bed levelingYes
Z-Offset CalibrationYes
Automation
AutoPrint ProYes
Download the file before the print startsNo2
Works
Depends
Not supported
Needs a camera
SimplyPrint doesn't support this through this connection yet.
What slicer to use for the Two Trees SK1
None of the slicers in SimplyPrint's cloud has a ready-made profile for the Two Trees SK1, but it takes standard G-code: start from a similar printer's profile and set the bed size, height and nozzle to match.
We only list slicers you can use in the SimplyPrint cloud, so there may be others for the Two Trees SK1.
Cloud-Based Slicer for Two Trees SK1
All supported slicers - directly in your browser with SimplyPrint's online cloud slicer. No installation required. Slice your Two Trees SK1 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 Two Trees SK1: 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 Two Trees SK1
Two Trees doesn't make an app for the Two Trees SK1. SimplyPrint works as its app: on your phone and in any browser, with a slicer in the cloud.
There's no plate swapper or auto-ejection kit for the Two Trees SK1 in SimplyPrint yet, but AutoPrint can still keep it printing: once the plate is clear, it starts the next job from your queue.
CoreXY printers push their prints off
The Two Trees SK1's bed only moves up and down, so the usual way to automate it is a G-code routine that lets the toolhead push the cooled print off the front of the plate before the next job starts.
Ways to automate it
Push prints off with the toolheadOn a CoreXY printer, a G-code routine can push the cooled print off the front of the plate before the next job starts.
Your own ejection G-codeWrite the routine that clears your plate, and AutoPrint runs it after every print.
Two Trees SK1 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
256 x 256 x 256 mm
Bed type
Square
Bed size
256 x 256 mm
Max print height
256 mm
Printing
Enclosure
Partly enclosed
Motion system
CoreXY
Max extruder temperature
300 °C
Has heated bed
Yes
Max bed temperature
100 °C
Number of nozzles
1
Toolheads
1
Direct drive
Yes
Probing tool / Auto Bed Leveling
Yes
Filament width
1.75 mm
Multi-material
Toolchanger or hotend changer
No
IDEX (independent dual extruders)
No
Connecting
Connectivity
Wi-Fi, USB
Prints from
USB stick
Supports serial printing
No
Shipped firmware
Klipper
Files and slicing
Supported file formats
G-code (.gcode, .gco, .g)
The printer
Printer manufacturer / brand
Two Trees
Printer model name
SK1
Made by a company from
China
Launched
January 2024
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 Two Trees SK1 print?
Filament compatibility for the Two Trees SK1: the materials it can handle, judged from its hotend, bed, chamber and enclosure.
Filament
Suitability
Notes
PLA
Great
The easiest filament to print. Works on almost any printer; a heated bed helps adhesion but is not required.
PETG
Great
Comfortably in range (PETG likes a ~230-250C hotend and a ~70-85C bed).
TPU & flexibles
Great
The direct-drive extruder feeds flexible filament well. Print slowly for clean results.
ABS & ASA
With care
The bed is hot enough, but ABS and ASA warp without an enclosure, which is strongly recommended for clean prints.
Nylon (PA)
With care
Possible with care - an enclosure and very dry filament are essential.
Polycarbonate (PC)
With care
On the edge - PC really wants an enclosed, hot chamber to avoid warping.
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 Two Trees SK1
Filaments the Two Trees SK1 prints well, Two Trees's own first, then the best known.
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 Two Trees SK1, and how open Two Trees 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: Mostly open (3.9 of 5)
Mostly open
Walled gardenOpen
Two Trees (TwoTrees) is a Shenzhen maker of desktop fabrication machines, founded in 2017. It built budget 3D printers from 2018 (the Sapphire Pro and Sapphire Plus, and the Bluer) and launched the SK1, a Klipper-based CoreXY printer, at the end of 2023. By October 2026 its own stores sell CNC routers and laser engravers; the 3D printer section lists no printers, and only spare parts for the SK1 remain. Its printers were bought mostly by hobbyists who like to tinker.
Open in practice: the SK1 runs stock Klipper with no cloud, and the older printers ran Marlin. The weak spot is support rather than lock-in: Two Trees has moved on to CNC and laser machines, documentation is thin and some SK1 parts are hard to find.
Firmware and custom firmware ●●●●●
Tom's Hardware found the SK1 runs unmodified ('vanilla') Klipper, which is open source and replaceable. For the older Sapphire printers, a GitHub account named TwoTrees-china published Marlin 2.0 source for their MKS Robin Nano board in 2020 (not updated since), and upstream Klipper ships configs for the Sapphire Pro and Sapphire Plus.
[7][9][10]
Local control and integrations ●●●●●
Tom's Hardware found the SK1 runs vanilla Klipper: files and settings are reachable from a computer on the home network, files can also go by USB stick, and there is no cloud or phone app to use. Klipper's standard web stack, Moonraker, documents its API, so other software can control the printer locally.
[7][16]
Third-party filament, slicers and parts ●●●●●
Any 1.75 mm filament and any slicer (Cura and PrusaSlicer profiles come on the SK1's USB stick). But the SK1's hotend copies Bambu Lab's design with a small separate nozzle, which Tom's Hardware found hard to source.
[7]
Repairs and spare parts ●●●●●
Two Trees' store still sells SK1 parts: mainboard, heated bed, touchscreen, fans, PEI plate and power adapter, and it published a printable SK1 extruder kit on GitHub. Tom's Hardware found nozzles and hotends hard to find, and we found none listed in the store.
[11][12][13][8][7]
Community and documentation ●●●●●
Tom's Hardware called the SK1's documentation sparse. Two Trees has a wiki and a download page, now centred on its CNC and laser machines; beyond that, owners rely on upstream projects such as Klipper.
[7][14][15]
Pros
The SK1 runs stock Klipper: control it from a browser on your own network, with no account or cloud.
Open-source firmware, so the SK1 can be modified and tuned freely.
Common SK1 spare parts (mainboard, heated bed, touchscreen, fans) are still sold by Two Trees.
Works with any 1.75 mm filament and any slicer; Cura and PrusaSlicer profiles are included.
Cons
Two Trees no longer lists any 3D printer in its own stores; it now focuses on CNC routers and laser engravers.
Sparse documentation for the SK1, per Tom's Hardware.
The SK1's Bambu-style hotend and nozzle are hard to source.
Tom's Hardware found typos and wrong-language menus on the SK1 touchscreen.
Track record
February 2026: By February 2026 the 3D printer page of Two Trees' US store listed no products; in October 2025 it still showed the SK1 (Internet Archive captures). In October 2026 the store sells CNC routers and lasers, plus SK1 spare parts.
[5][6][4]
October 2024: Two Trees published a redesigned SK1 extruder kit (filament cutter, consumable detection) on GitHub under GPL-3.0, with firmware and printable STL files.
[8]
2023: Two Trees introduced the SK1, its first high-speed CoreXY printer, at the end of 2023.
[1]
Researched from 16 sources, last checked October 18, 2026. Show sources
Yes. You can connect the Two Trees SK1 to SimplyPrint via Klipper (Moonraker), then slice, queue, start and monitor prints from your browser or the mobile app.
How do I connect the Two Trees SK1 to SimplyPrint?
Follow our step-by-step setup guide for the Two Trees SK1. It shows how to connect it via Klipper (Moonraker), what you need for each, and which to pick.
What slicer should I use for the Two Trees SK1?
Cura, PrusaSlicer and OrcaSlicer all work with the Two Trees SK1, and you can run any of them in SimplyPrint's online browser slicer - no install needed, on any device.
Can I use OrcaSlicer with the Two Trees SK1?
Yes, but OrcaSlicer has no built-in profile for the Two Trees SK1 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 Two Trees SK1 print?
Based on its specs (hotend up to 300C, heated bed up to 100C), the Two Trees SK1 handles PLA, PETG, or TPU & flexibles well. See the full filament guide above for ABS, nylon, PC and composites.
Does the Two Trees SK1 work with OctoPrint or Klipper?
The Two Trees SK1 works with Klipper (Mainsail and Fluidd), and SimplyPrint connects to it through them - so you get cloud access, a queue and camera monitoring on top.
What is the Two Trees SK1's bed size and build volume?
The Two Trees SK1 has a 256 x 256 mm print bed and prints up to 256 mm tall, a build volume of about 256 x 256 x 256 mm. See the full specifications table above for bed type, temperatures and more.
When did the Two Trees SK1 come out?
Two Trees launched the SK1 in January 2024.
Can the Two Trees SK1 eject prints automatically?
There's no kit for it that we support yet, but SimplyPrint's AutoPrint can push prints off with the toolhead, or run your own ejection G-code, and then start the next job from your queue.
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