For fast resin printing from Prusa
Prusa Research Original Prusa SL1S SPEED
An MSLA resin printer with a 5.96-inch monochrome screen, a 127 × 80 × 150 mm build volume, and exposure times from 1.3 seconds per layer.
In short The Prusa SL1S SPEED is an resin (MSLA) 3D printer with a 127 × 80 × 150 mm (5 × 3.1 × 5.9 in) build volume. Prusa Research claims a 6-inch LCD; the printer measures 225 × 237 × 400 mm (8.9 × 9.3 × 15.7 in).
Documentary analysis · Not personally tested
Resin · MSLAWhy consider it?
An advertised exposure time from 1.3 seconds per layer, one of the fastest resin printers documented in this catalog.
What to verify
The CW1S wash-and-cure station is not included by default; check precisely whether a listing is bundled with it or not.
Prusa SL1S SPEED specifications
- Technology
- Resin (MSLA)
- Build volume
- 127 × 80 × 150 mm (5 × 3.1 × 5.9 in)
- Printer dimensions
- 225 × 237 × 400 mm (8.9 × 9.3 × 15.7 in)
- Enclosure
- Protective cover
- LCD screen
- 6 in
- Multicolor
- One resin at a time; no automatic color or material switching.
- Materials
- Compatible 405 nm UV resins per Prusa Research; a 0.5 kg bottle of Prusament model resin is included.
- Connectivity
- USB, Wi-Fi, Ethernet
- Listed features
- Built-in air filtration
How much space does it need?
The Prusa SL1S SPEED measures 225 × 237 × 400 mm (8.9 × 9.3 × 15.7 in) for a 127 × 80 × 150 mm (5 × 3.1 × 5.9 in) build volume: the dashed box is the printer, the solid cube the largest theoretical part, about 7% of the machine’s volume. Add room for the spool or multicolor unit, cables and ventilation.
Source: official Prusa Research pages (prusa3d.com), checked September 28, 2026. Manufacturer claims, not our measurements. Build volume is nominal: orientation, supports and reserved zones can reduce the usable space.
Which projects is it for?
The SL1S SPEED is an MSLA resin printer with a 5.96-inch monochrome screen and a build volume of 127 × 80 × 150 mm per Prusa Research. That compact footprint suits figurines, jewelry, and highly detailed parts, where resin captures fine surface detail that FDM struggles to match.
An advertised exposure time from 1.3 seconds per layer makes it one of the fastest resin printers documented in this catalog, a factor that matters for batch runs of small parts.
Materials and setup
The printer runs compatible 405 nm UV resins on an MSLA screen with a physical resolution of 2560 × 1620 pixels per Prusa Research. A 0.5 kg bottle of Prusament model resin is included to get started without an immediate extra purchase.
Only one resin can be loaded at a time: there is no automatic color or material switching on this model, as with most resin printers on the market.
What the bundle includes or not
Per Prusa Research's listing, the standalone machine ships assembled with the power cable, the handbook, and the included model resin bottle. The CW1S wash-and-cure station is offered separately or as part of a dedicated bundle.
Before buying, check precisely whether a listing is the standalone machine or the CW1S bundle, since otherwise you'll need isopropyl alcohol, gloves, and a ventilated room to handle resin safely.
Alternatives to compare
To stay with Prusa Research in FDM rather than resin, the FDM vs resin guide helps compare the SL1S SPEED with the MK4S depending on the parts you're targeting.
The resin printer buying guide covers the criteria for comparing the SL1S SPEED with other resin formats in the catalog, especially build volume and screen resolution.
Similar printers to compare
Sources and limits
- Source: official Prusa Research pages (prusa3d.com), checked September 28, 2026. Manufacturer claims, not our measurements.
- How we assess specifications
We have not measured noise, real printing speed, accuracy or reliability, so none of these is rated here.