Ackuretta
SOL
Original embedded manufacturer PDF image extracted without re-encoding. Original background and any inherent PDF-image raster edges retained.
129 × 80 × 120 mmProfessional
MSLA(c) Prusa Polymers - prusa3d.comPrusa Original Prusa SL1
MSLADesktopDimensions sourced
Prusa's first resin printer uses LCD-masked UV exposure.
Source reviews: 2026-10-16.
Specifications are reported claims, not independent test results.
The machine at a glance
The details that matter.
Published specifications for this model. Follow a field's source for its configuration and measurement conditions; older fields refer to the profile's reference list.
| Introduction year | 2018 |
|---|---|
| Model family | Original Prusa SL |
| Process | MSLA |
| Build envelope (X × Y × Z) | 120 × 68 × 150 mm |
| Nominal box volume | 1.22 L · calculated from the envelope |
| Enclosure | Not verified |
| Materials cited in this profile | UV resin |
| Manufacturer listing status | Unknown |
| Regional stock and price | Check the manufacturer |
| Market grouping | Desktop · editorial grouping |
Technical specifications
| LCD resolution (pixels) | 2560 × 1440 |
|---|---|
| XY pixel pitch (µm) | 47 |
| Exposure Method | LCD-masked UV LED array |
| Mask Display Size | 5.5 inches |
| Recommended Layer Height (µm) | 25, 100 Manufacturer-recommended range; the earlier announcement also claimed a 10 µm minimum. |
| Release Mechanism | Tilting resin tank |
| Tank Film | Replaceable FEP |
| Resin Monitoring | Resin level sensor |
| Controller | PrusA64 |
| Connectivity | USB, Ethernet and Wi-Fi |
| Display | Color touchscreen |
| Slicing Software | PrusaSlicer |
| First Shipments | May 2019 |
Model notes · 01
Masking and separation
SL1 exposes each layer through an LCD mask and separates it by tilting the resin tank. Pixel pitch describes the mask grid, not a guaranteed tolerance for a finished part.
Model notes · 02
Production launch
The 2018 announcement was followed by hardware revisions before May 2019 shipments. The shipping update confirms PrusA64 electronics, network file transfer, firmware updates and local browser status monitoring.
A place in the lineage
Introduced in 2018.
Announced September 22, 2018; shipping confirmed May 31, 2019.
Family: Original Prusa SL · Historical model
What changed
- Prusa's expansion from filament printing into LCD resin printing
Read this with the specifications
Historical documentation verifies identity; current sale availability is not established.
A larger nominal envelope does not establish better print quality. Fit depends on the configuration, usable area, supports, and orientation.
Continue exploring
More MSLA printers 
