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© Prusa Research a.s.

Original Prusa CW1S support

Firmware 3.3.0

May 16, 2023

PrusaSlicer 2.7.3

April 18, 2024

Handbook 1.02

September 09, 2022

Useful links

CW1S Community Forum
CW1S Printable Parts
CW1S Spare Parts

Upgrade to CW1S from Original Prusa CW1

CW1 to CW1S Platform upgrade

CW1 to CW1S Platform upgrade

Fix common issues

Resin yellowing and how to reduce it

Resin yellowing and how to reduce it

When printing various resins, you may notice a more or less significant yellowing effect after curing your models. This affects most MSLA materials, including all of our Prusament…

Get started with CW1S

IPA pigment filter (CW1/CW1S)

IPA pigment filter (CW1/CW1S)

The Original Prusa Curing and Washing Machine (CW1/S) uses isopropyl alcohol (IPA) to wash the uncured resin around the print model before curing it. The resin usually leaves pigment…

Community posts

Polymaker CoPA and PA6-CF20 on the MK4, looking for well-tested and fine-tuned PrusaSlicer filament settings

8/15/2025, 10:24:16 PM
3 replies

MMU stops feeding filament before pinch roller grabs it

8/15/2025, 10:14:53 PM
3 replies

New belt tuning frequencies (98 / 92 Hz) - Discussion (is it even possible to align the gantry with these settings?)

8/15/2025, 9:00:00 PM
5 replies

I am not sure what I am doing wrong with my MMU3 unit.

8/15/2025, 8:55:03 PM
13 replies

Ideas for letfover MK4 frame after upgrading to the core one?

8/15/2025, 8:41:27 PM
10 replies