3D Printing InfoPrinter comparison
UltiMaker Factor 4 vs UniFormation GKtwo
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore UltiMaker Factor 4 comparisonsMore UniFormation GKtwo comparisons
| Property | UltiMaker Factor 4INDUSTRIAL | UniFormation GKtwoRESIN |
|---|---|---|
| Identity | ||
| Brand | UltiMaker | UniFormation |
| Class | INDUSTRIAL | RESIN |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | UltiMaker Factor 4[1] | UniFormation GKtwo 10.3" 8K Resin Printer[2][3] |
| Release date (announcement and actual shipping) | Announced 22 April 2024, shown at HANNOVER MESSE 2024 (22-26 April) and TCT Asia (7-9 May 2024)[1] | Not documented |
| Launch MSRP (USD) | Starting at approximately $20,000[1] | Not documented |
| Street price (USD; dated snapshot per entry) | Not documented | $749.99 on uniformation3d.com but marked Sold out, checked Aug 2026 (the page shows a compare-at price of $0.00, i.e. none set)[2] |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Shares the 330 x 240 x 300 mm envelope with the UltiMaker S5, S7 and S8, which is the single most contaminated figure in UltiMaker's range. What separates the Factor 4 is the actively controlled 70 °C build volume, the climate-controlled 6-spool material station holding humidity below 15%, and HEPA filtration. UltiMaker also sells a Factor 4 Plus[1] | UniFormation lists GKtwo variants by region and bundle (GKtwo ALL, GKtwo ALL UK) rather than by hardware, so the hardware specification is common; what changes is what ships in the box. Not to be confused with the earlier GKone[2] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 330 x 240 x 300 mm[1] | 228 x 128 x 245 mm[2][3] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | Not documented | 350 x 315 x 455 mm[2][3] |
| Net weight (kg) | Not documented | 20 kg packaged (UniFormation publishes package weight, not net weight)[2][3] |
| Enclosure: open / enclosed; panel material; door/lid | Enclosed with actively controlled chamber airflow and a HEPA filter[1] | Open-frame MSLA with a UV-blocking cover[2][3] |
| Passive chamber temperature reached (if enclosed; measured values preferred) | Build volume temperature controlled up to 70 °C with actively controlled chamber airflow (manufacturer specification)[1] | Not documented |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | Direct-drive dual extrusion; kinematic layout not stated in the source checked[1] | MSLA — photocuring LCD, single Z axis, straight-lift peel[2][3] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Direct-drive dual extrusion[1] | Not documented |
| Filament diameter | 2.85 mm[1] | Not documented |
| Hotend & Nozzle | ||
| Max nozzle temp claimed AND firmware max temp limit (both values) | 340 °C maximum with the high-temperature print core (manufacturer claim)[1] | Not documented |
| Filament Handling & Detection | ||
| Spool holder location & max spool size; drybox compatibility | Automatic climate-controlled material handling and storage station holding humidity below 15%, storing up to six spools[1] | Not documented |
| Cooling & Air Handling | ||
| Chamber/exhaust fan & filtration (activated carbon / HEPA) | HEPA filter[1] | Not documented |
| Electronics & Power | ||
| Input voltage (110/220 V, switch or auto) | Not documented | 110/220 V[2][3] |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Not documented | Not named. Slicers: CHITUBOX, the GKtwo slicer, and Lychee. File format STL[2][3] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | Not documented | 5-inch touchscreen (control panel — not the masking LCD, see W1)[2][3] |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | Not documented | USB file transfer[2][3] |
| Materials Support | ||
| Officially supported filament list | UltiMaker-branded PPS CF, PLA, Tough PLA, Nylon, PETG, PET CF and PVA, plus validated third-party materials from BASF Forward AM, Kimya, Polymaker, LEHVOSS and Jabil[1] | 402.5-405 nm photopolymer resin. No closed compatibility list published[2][3] |
| Independently Measured Performance | ||
| Dimensional accuracy measurements (third-party, with numbers) | Dimensional accuracy within +/-0.2 mm or +/-0.2% of feature nominal length; UltiMaker states it tested over 95% print-completion success. Manufacturer figures, not independent measurements[1] | Printing tolerance +/-0.1 mm for lengths up to 100 mm, +/-0.1% beyond — a manufacturer specification, not an independent measurement[2] |
| Resin & MSLA | ||
| Masking LCD | Not documented | 10.3-inch masking LCD, 7680 x 4320 px (8K), XY pixel pitch 29.6 um (manufacturer specification)[2][3] |
| Light source | Not documented | Photocuring LCD light engine at 402.5-405 nm. UniFormation does not publish the LED count or optical design on this page[2][3] |
| Layer exposure times | Not documented | 2-3 s per layer at 0.05 mm layer height (manufacturer figure — one of the few makers here that states the layer height its exposure figure assumes). Sortable value is the midpoint[2][3] |
| Layer height range | Not documented | 0.03, 0.05 and 0.1 mm (three discrete settings, not a continuous range)[2][3] |
| Resin vat & feeding | Not documented | Resin vat capacity 0.7 kg, with built-in resin heating: UniFormation quotes warming to 95 F (35 C) in 8 minutes from 50 F. No auto-refill and no level sensing published[2][3] |
| Fume extraction | Not documented | Built-in odour filter[2][3] |
Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.
Sources for this comparison
- UltiMaker Factor 4: technical specifications and pricing 3dprintingindustry.com · 2026-08 · review
- UniFormation GKtwo 10.3" 8K resin printer product page uniformation3d.com · 2026-08 · vendor
- UniFormation GKtwo technical data table 3djake.com · 2026-08 · vendor