Original Prusa MK3.5S | Prusa Knowledge Base

Upgrade to MK3.5S from MK3S/MK3S+

Original Prusa i3 MK3S/MK3S+ to MK3.5S upgrade

9 chapters

Moderate

Begin assembly

Get started with MK3.5S

First print with PrusaSlicer (2.9)

If you are using PrusaSlicer for the first time to generate a gcode or bgcode for printing, you can follow the steps below. Click on the links to get more information about the…

Prusa Connect and PrusaLink explained

Prusa Connect and PrusaLink are two remote printing solutions developed in-house by Prusa. Its origin is in the management system used in our record-sized print farm located in…

How to update firmware (CORE One L, CORE One, CORE One INDX, MK4/S, MK3.9/S, MK3.5/S, XL)

On the Prusa CORE One L/+, Prusa CORE One/+, Prusa CORE One/+ INDX, Original Prusa MK4/S, MK3.9/S, MK3.5/S, and XL, the firmware is flashed using a USB flash drive. This is valid…

Upgrading the MK3.5 to the MK3.5S

If you have an MK3.5 printer, there is no product in our e-shop with the direct upgrade to the MK3.5S. However, purchasing the parts to turn your printer into the MK3.5S separately…

Shipping information

Current lead time estimates for new orders Updated: December 10th, 2025 --> The…

Fix common issues

First layer issues

This is by far the most common 3D printing problem, and probably the first one you may encounter. The first layer is the essential one because it is the base of the printed object.…

P.I.N.D.A./SuperPINDA Sensor testing

P.I.N.D.A. stands for Prusa INDuction Autoleveling sensor and is a vital component facilitating the calibration of our printers. There are 3 different versions: P.I.N.D.A. V1…