Prusa Research · UK product support

Original Prusa SL1S SPEED 3D Printer

The Original Prusa SL1S SPEED offers excellent print quality and unique features.

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£1,979

SKU PRUSA-146-0

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Original Prusa SL1S SPEED 3D Printer. The Original Prusa SL1S SPEED offers excellent print quality and unique features.

Features & product detailsExplore the design, capabilities and setup information.

About this product

The Original Prusa SL1S SPEED offers excellent print quality and unique features. Its innovative tilting resin tank allows for fast printing. You'll get highly detailed results and an intuitive workflow.

Choose the SL1S SPEED printer on its own or the bundle with the CW1S washing, drying and curing station. The CW1S is included only when you select the bundle.

The system is certified for many industry-leading resins, making it suitable for various applications, such as creating complex engineering components, producing high-fidelity collectibles, crafting bespoke artistic pieces, and manufacturing small-batch specialized parts.

Features like the resin sensor, automated resin calibration, and simplified resin tank cleaning give you full control during printing. The Original Prusa SL1S SPEED 3D printer delivers high performance and broad capabilities.

Product Overview

Easy to Use

The SL1S SPEED setup wizard uses photographs and illustrations to guide configuration and calibration. Follow the resin handling and post-processing instructions as part of the setup, not just the printer controls.

Ready for demanding applications with industrial resins

SL1S SPEED supports a range of professional resin workflows, including manufacturer-tested profiles developed with material partners such as Henkel Loctite. Match the exact resin, exposure settings, washing and curing process to the intended application.

Perfect for castable resins

Fine-detail resin printing makes SL1S SPEED relevant to jewellery pattern production with compatible castable resins. Use the resin manufacturer's printing, burnout and casting process for the material you choose.

Upgrade from Original Prusa SL1

An SL1-to-SL1S upgrade kit is offered for compatible Original Prusa SL1 machines. It changes the exposure hardware and other supplied components. Compare the kit contents and installation requirements with replacing the complete machine.

Medical One - Certified Dental solution

Prusa Medical One is a separate system intended for validated dental workflows. Do not assume that buying an SL1S SPEED alone provides the same certification or establishes the suitability of a printed dental component.

To streamline your practice, the Medical One integrates directly with Exocad, the leading dental CAD/CAM software, enhancing user convenience and workflow efficiency.

If you are interested in Medical One, please visit the product page at medical.prusa3d.com.

Main Features

Great Print Quality

The SL1S features a 5.96'' monochrome LCD with a physical resolution of 2560×1620p. Taking advantage of the completely reworked optics and the new monochrome display technology, the SL1S offers vastly improved print quality compared to its predecessor.

Tilting mechanism

Tilting the resin vat is one of the key features of the SL1S SPEED and provides significant added value compared to the competition. After each layer is cured, the entire display with the vat tilts, allowing for gentler detachment of the model from the FEP film, continuous resin mixing in the vat, and most importantly, much faster printing.

Resin Calibration

Resin Calibration can print up to eight test objects with different exposure times in one run. Compare the results and use the selected exposure to create a resin profile. This helps tune a compatible third-party resin to the printer.

Resin sensor

The SL1S SPEED offers a remarkable feature: pre-print resin level measurement. Prior to starting a print, the printer itself measures the resin level and provides guidance. It informs you whether there is sufficient resin for the upcoming print or if additional resin needs to be added. Additionally, it detects and alerts you if there is an excessive amount of resin in the vat, preventing any potential overflow that could harm the printer. This intelligent resin management capability ensures a seamless and worry-free printing process.

Connectivity and Prusa Connect + PrusaLink

Wi-Fi and Ethernet enable network features on the SL1S SPEED, including firmware notifications, diagnostic log sharing with Prusa support and browser-based print management. Access depends on the network and management setup.

Documentation and support

Prusa's knowledge base provides setup, maintenance and troubleshooting documentation. Fabinity can help with product questions and after-sales support in the UK.

Technical specificationsDimensions, materials, compatibility and connectivity.

The details that matter

Technical specifications

Manufacturer figures, with plain-English notes where useful.

Key specifications

Build volume: 127 × 80 × 150 mmUsable print area, X × Y × Z, or diameter × height.
Layer height / resolution: 0.025–0.10 mm supported; 0.01 mm minimumLayer thickness; this is not the same as dimensional accuracy.
Compatible materials / filaments: 405 nm UV resinSome materials need additional equipment. Check the product details.
Build type: Fully enclosedOpen, semi-enclosed or fully enclosed. Assembly options are shown separately.
Max print speed: Not specifiedManufacturer maximum. Actual speed depends on material and print settings.
Connectivity (Wi-Fi / app): USB, Wi-Fi, EthernetOnly listed connections are confirmed; Wi-Fi does not imply app support.
Noise level: Not specifiedNoise figures depend on measurement distance and operating mode.
Warranty: Manufacturer’s warranty (Prusa Research)The term is set by the manufacturer. Ask us for the terms for this model; your statutory rights are not affected.

Machine & package

Printer dimensions: 225 × 237 × 400 mm
Post processing: CW1S wash and cure station included only with the CW1S bundle

Printing

Printing technology: MSLA
Tilt time: 3 seconds
Exposure time: 1.3–2.4 seconds, depending on material and layer height

Controls & connectivity

Display: 5.96-inch monochrome LCD, 2560 × 1620 pixels
Power consumption: Approximately 100 W while printing

Materials & environment

Enclosure note: Resin printer with UV cover

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Buying questions

Which Original Prusa SL1S SPEED 3D Printer options can I order?

Use the configuration selector above to check each package, current price and availability. The selected variant is the one added to your basket.

Are the displayed prices inclusive of VAT?

Yes. Storefront prices are shown in GBP including VAT. Available delivery services and charges are shown at checkout before payment.

What warranty is included?

Machines carry Prusa Research’s warranty against manufacturing defects. Fabinity helps you raise a claim and handles UK support; warranty terms do not limit your statutory rights.