# Prusa MK4S

### Prusa Slicer: Preparing Model  


Article - [Beginner's Walkthrough](https://help.prusa3d.com/article/first-print-with-prusaslicer_1753)  
Youtube - [PrusaSlicer Beginner Tutorial: Learn the basics](https://www.youtube.com/watch?v=_kIqMPNQNSw)  
[Step-by-Step Guide to Create 3D Models for Printing Success](https://www.sovol3d.com/blogs/news/step-by-step-guide-to-create-3d-models-for-printing-success?srsltid=AfmBOooQAdNjvRThxXnB88rUJ0WKOFRi8sjd_Q_DX5wo8HRuvxIDBBIG)

#### Connect the printer and select filament type

[![Screenshot 2026-06-04 135631.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/screenshot-2026-06-04-135631.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/screenshot-2026-06-04-135631.png)

#### Navigation

Rotate plate - hold left mouse button  
Zoom in/out - mouse scroll button  
Move plate - hold right mouse button

#### Model import

First, you have to import your model. You can either **drag and drop** it directly to the PrusaSlicer window, use the **Add button** in the top toolbar, or choose **File - Import**.

Supported 3D formats are STL, STEP, 3MF, OBJ, and AMF.

[![Screenshot 2026-06-04 134012.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/screenshot-2026-06-04-134012.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/screenshot-2026-06-04-134012.png)

#### Preparing the Model

Your model may need to be reoriented after import to optimize the print. Icons in the left toolbar will allow you to rotate, resize, and move your model. The place-on-face tool will auto align your model with the print bed.

[![Screenshot 2026-06-04 134544.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/screenshot-2026-06-04-134544.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/screenshot-2026-06-04-134544.png)

#### Adding Supports

Models with an overhang over 45 degrees will require supports to print properly. To turn supports on pick either Supports: Everywhere or Supports: On build plate only from the drop-down menu in the right panel.

[![Screenshot 2026-06-04 140204.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/screenshot-2026-06-04-140204.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/screenshot-2026-06-04-140204.png)

Firmware updates: [https://help.prusa3d.com/downloads](https://help.prusa3d.com/downloads)

#### Exporting the G-code

PrusaSlicer automatically detects if you insert an SD card, USB flash drive, or other removable media.

When detected, a new Export to SD/USB drive button will appear next to the Export G-code button (bottom right corner). Clicking it will open the file save dialog with the path initialized to the SD card or USB flash drive.

If multiple SD cards or USB flash drives are detected, the file dialog is opened at the last visited removable media.

Once a G-code is exported to a removable media, an Eject button is shown on the bottom right of the plater, which will safely disconnect your device.

Insert the USB flash drive into the printer and select your file.

<div class="sc-8d6df172-0 gGsTcb" id="bkmrk--4"><table class="sc-8d6df172-1 juHWma table"><tbody><tr><td><span aria-owns="rmiz-modal-c16fc7284ecb" data-rmiz=""><span data-rmiz-content="found">![](https://help.prusa3d.com/wp-content/uploads/2024/11/948f9538d72e8f2a9a22210d9e936b69_painted.jpeg)</span><span data-rmiz-ghost=""><button aria-label="Expand image" data-rmiz-btn-zoom="" type="button"><svg aria-hidden="true" data-rmiz-btn-zoom-icon="true" fill="currentColor" focusable="false" viewbox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="M 9 1 L 9 2 L 12.292969 2 L 2 12.292969 L 2 9 L 1 9 L 1 14 L 6 14 L 6 13 L 2.707031 13 L 13 2.707031 L 13 6 L 14 6 L 14 1 Z"></path></svg></button></span></span></td><td><span aria-owns="rmiz-modal-1db5930bd401" data-rmiz=""><span data-rmiz-content="found">![](https://help.prusa3d.com/wp-content/uploads/2024/11/f0c8a0865a14a401cd409a188ebd96cf_painted.jpeg)</span></span></td></tr></tbody></table>

</div>#### Using PrusaLink

PrusaLink allows monitoring, file uploads, and print control without internet access. The PrusaLink web interface is accessible only on your local network. Enter your printer's IP address (Printer's menu&gt;Settings&gt;Network&gt;Prusa Link) into your browser to access it. This is a useful tool, but not needed for the printing process.

### Maintenance

[Regular Printer Maintenance](https://help.prusa3d.com/article/regular-printer-maintenance-mk4-s-mk3-9-s_419000?product=mk4s)  
[Replacing nozzle guide](https://help.prusa3d.com/guide/how-to-replace-the-prusa-nozzle-mk4s-mk3-9s_734750)  
[QR Error Codes](https://help.prusa3d.com/article/qr-error-codes_176114?product=mk4s)  
[Adjusting belt tension](https://help.prusa3d.com/article/adjusting-belt-tension-mk4-s-mk3-9-s-mk3-5-s-mk3-s_112380?product=mk4s)  
[Firmware updates](https://help.prusa3d.com/product/mk4s)

1. Download the latest firmware for your printer on the Prusa product page. In the “Firmware” section, download the package for your printer model and extract the .zip or .bbf file on your computer.
2. Make sure the USB flash drive doesn't contain any previous firmware (.bbf file)
3. Copy the new .bbf file to the root directory of a USB flash drive (Not within a folder).
4. Insert the USB flash drive and push the reset button**.** The bootloader will automatically compare the installed version with the one on the drive and, if it is newer, will automatically offer you to flash it.
5. Confirm the update by selecting the "FLASH" button and pressing the knob.  
    [![image.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/image.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/image.png)[![image.png](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/scaled-1680-/rKuimage.png)](https://scil-wiki.su.edu/uploads/images/gallery/2026-06/rKuimage.png)