How the two machines differ on paper: build volume, process, enclosure, nozzle temperature, launch year and the materials each manufacturer names. This is a specification comparison, not a hands-on test.
MSLAManufacturer image: Formlabs
MSLAPrusa — official manufacturer imageGenerated from the two sourced profiles on 2026-11-02. Fields a source doesn't establish are left out of the comparison rather than guessed.
Published specifications don't settle print quality, reliability or noise. Compare the exact configuration, bundled accessories, regional price and support with each manufacturer, and check that the materials you need are supported on the configuration you'd buy.
| Specification | Formlabs Form 4 | Original Prusa SL1S SPEED |
|---|---|---|
| Manufacturer | Formlabs | Prusa |
| Printing process | MSLA | MSLA |
| Build envelope (X × Y × Z) | 200 × 125 × 210 mm | 127 × 80 × 150 mm |
| Nominal box volume | 5.25 L | 1.52 L |
| Enclosure | Enclosed | Not verified |
| Maximum nozzle temperature | Not verified | Not verified |
| Introduction year | 2024 | 2021 |
| Collection | Current / announced | Listing status only |
| Market grouping (editorial) | Professional | Desktop |
| Materials named by the manufacturer | Photopolymer resin | 405 nm photopolymer resin |
| Layer height (µm) | 25–200 | Not verified |
| Machine dimensions (mm) | 398 × 367 × 554 | Not verified |
| Machine weight (kg) | 18.3 | Not verified |
| Connectivity | Wi-Fi 2.4/5 GHz, Ethernet 1000 Mbit, USB-C 2.0 | Not verified |
| XY pixel pitch (µm) | 50 | Not verified |
| Wavelength (nm) | 405 | 405 |
| Backlight LEDs | 60 | Not verified |
| Resin Cartridges | 1 | Not verified |
| Resin Cartridge Type | V2 | Not verified |
| Resin Temperature | 25–45 °C, material-dependent | Not verified |
| Operating Environment | 18–28 °C | Not verified |
| Minimum Access Dimensions (mm) | 407 × 478 × 844 | Not verified |
| Power Rating (W) | 480 | Not verified |
| Display | 7-inch touchscreen, 1280 × 800 | Not verified |
| Monitoring Camera | 2592 × 1944 (5 MP) | Not verified |
| Software | PreForm, Dashboard, Form Mobile | Not verified |
| Input File Types | STL, OBJ, 3MF | Not verified |
| LCD resolution (pixels) | Not verified | 2560 × 1620 |
| Lcd Screen | Not verified | 5.96-inch monochrome |
Professional resin printer using Low Force Display technology.
The LFD engine combines an LED backlight, LCD masking and a flexible-film tank. Resin temperature, level and print forces are monitored. Published pixel size describes the imaging grid, not a general accuracy guarantee.
Full sourced profileMonochrome-screen revision of the SL1 resin platform.
SL1S SPEED uses a tilting resin tank and a removable platform designed to retain calibration. PrusaSlicer provides tested material profiles; USB, Wi-Fi and LAN are documented. Exposure-time claims vary with resin and layer height.
Full sourced profile