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Original Prusa Curing and Washing Machine (CW1S)


The most significant features of Original Prusa CW1S

Resin Pre-heat

Resins tend to change their state while being stored, that is the reason to shake the bottle with resin well before printing. However, CW1S can also preheat the resin before printing it, thus getting it to the ideal printing temperature and state for the best performance of the SL1S and the resin itself. 


The finished print has to be washed to remove the uncured resin from its surface. CW1S uses a stainless steel tank for isopropyl alcohol and a magnetic propeller. The magnetic propeller movement stirs the liquid, so it gets to every part of the model. This method is less aggressive compared to ultrasonic cleaning and works very well even with very small objects.


Drying a washed model is yet another feature of the multipurpose CW1S. Before the washed model is cured with UV-light, it has to be dried in order to avoid resin residue stains.


Curing the model with UV-light is an essential part of the resin printing process. Printed objects are usually soft, so treating them with UV light gives them optimal surface properties.


CW1S, unlike most of the other resin printing accessories, combines 4 important features in a single device. Even though it’s a multi-purpose device, it’s very compact (smaller than the SL1S) and saves you a lot of space in your workshop.


CW1S was designed with user comfort in mind. The IR sensor detects whether the liquid container is present in the device and displays the set of functions to choose from accordingly. CW1S simply knows what steps to take in advance :)


Technical Parameters

  • 4 UV LED strips to cure the printed models
  • UV LED wavelength: 405 nm
  • Max power of the UV LED: 52,8 W
  • EEE group: 3 (IT and/or telecommunication equipment)
  • Power supply: Input 100-240VAC, 50/60Hz, 2.0A. Output: 24V, 6.67A, 160W
  • Average power consumption: 130W
  • Max. working temperature range: 16 °C - 38 °C, indoor use only
  • Working humidity: 85 % or less
  • CW1S box dimensions: 390×400×460 mm (X×Y×Z)
  • CW1S dimensions: 218×232×345 mm (X×Y×Z)
  • CW1S energy consumption:
    • Preheating / Drying: ≤ 135W
    • UV curing: 50W
    • Washing: 6W

List of Features

  • Resin preheat
  • Washing using magnet driven propeller to create a vortex and wash resin residue from the print
  • Dries the print after washing is done
  • Cures the print using 4 UV LED strips

Original Prusa Curing and Washing Machine (CW1S) is a recommended accessory for the Original Prusa SL1S, but it’s compatible with all the other tabletop SLA printers on the market as well. The CW1S is a multi-purpose device, which takes care of pre-printing and post-processing tasks: preheating the resin before printing, and also washing, drying, and curing the printed model. This all-in-one device with a sturdy, compact body and smart design takes resin 3D printing to next level, making it a much more comfortable and efficient process.

    Power Cable (US), Handbook (EN) (change)

    In stock

    Preparation time: 1-3 business days.


    Why the Original Prusa 3D Printer?

    • 1

      Great Support

      We are providing full 24/7 customer support with live chat and e-mail in several languages.

    • 2


      If you buy our 3D printer, you can upgrade it later to the new version, no need to buy a new model.

    • 3

      Ready to print settings

      In PrusaSlicer you can set everything you want. It's very easy to use and gets new features regularly.

    • 4

      Best Assembly instructions

      Pictured to the smallest detail with all fasteners and mechanical parts having 1:1 drawing.

    • 5

      Fun to Assemble

      Assembling the kit is an excellent first step to the world of 3D printing. Get fun and knowledge!

    • 6

      Quality Garanteed by Josef Prusa

      We operate 700+ printers running 24/7. We need high-quality for our own use – and we design our machines to meet these criteria.



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