EN
  • Čeština
  • Italiano
  • Deutsch
  • Polski
  • Français
Login

8. Preflight check

8. Preflight check
Relevant for:
Last updated 6 days ago
8. Preflight check
 Difficulty
Easy
 Steps
16
 Available languages
CSPLDEITFR
3D Printing Handbook
3D Printing Handbook
To make this chapter easier to follow, refer to the 3D Printing Handbook included in your kit which is in English only. Or visit our latest online version in other languages.
The latest version is always available at help.prusa3d.com
The handbook contains more detailed descriptions of the important procedures in this chapter and other very useful things for future printing.
Read the Disclaimer and Safety instructions chapters.
Attaching the print sheet
Attaching the print sheet
Make sure there is nothing on the heatbed. The heatbed must be clean. Any dirt can damage the surface of both the heatbed and the print sheet.
Attach the sheet by first aligning the rear cutout with the locking pins on the back of the heated bed (marked in orange in the picture above). Hold the sheet by the front two corners and slowly lay it down onto the heated bed - watch your fingers!
Keep the print sheet clean for optimum performance.
#1 cause of prints detaching from the print surface is a greasy print sheet. Use IPA (Isopropyl alcohol) to degrease it if you have touched its surface before.
First run
First run
First run
First run
Insert the USB drive included in your kit into your printer.
The included USB drive contains the latest firmware file.
Connect the power cable and connect the printer into a wall outlet.
Turn the printer on using the switch on the back.
The printer will now detect if a new firmware file is available on the USB drive.
If the "New firmware available" screen appears, hit FLASH by pressing the rotary knob to upgrade to the latest firmware.
If no such message appears, the printer is running the latest firmware already. Proceed to the next step.
Printer setup
Printer setup
Printer setup
After upgrading to the newer firmware, the printer will give you a choice of languages and then the welcome screen.
Hit OK to setup the printer.
On the Printer setup screen, select your printer type: MK3.5S.
Leave the other items unchanged unless you have installed custom parts on the printer (e.g., nozzle with a different diameter, silicone sock removal).
Hit Done to complete the printer setup.
Network setup: Wi-Fi connection (Optional)
Network setup: Wi-Fi connection (Optional)
Network setup: Wi-Fi connection (Optional)
Network setup: Wi-Fi connection (Optional)
The Network setup screen will take you through connecting to a Wi-Fi network. However, if you don't want to connect your printer now, you can do so at any time later. In that case, hit No on the screen and skip this step.
If you want to connect your printer to a Wi-Fi network, hit Yes.
On the following screen, you will be instructed to upload your Wi-Fi credentials (Wi-Fi name and password) via our mobile application (recommended).
The Prusa app is available for download on the App Store for iOS and Google Play Store for Android. For more about the Prusa app, read the article Prusa Mobile App.
However, if you prefer to use another method to enter your Wi-Fi credentials, select Cancel and chose other method from the list on the next screen.
All methods for connecting the printer to the network are described in the Network Connection article.
To send Wi-Fi credentials via the mobile app, follow the instructions on the printer screen. The transfer is via NFC, so when prompted by the app, hold your phone close to the NFC antenna at a maximum of 2-3 cm away.
After successful data transfer, you will be prompted on the printer to confirm and then connect.
Network setup: Prusa Connect (Optional)
Network setup: Prusa Connect (Optional)
Network setup: Prusa Connect (Optional)
Network setup: Prusa Connect (Optional)
The next Network setup screen will offer to add the printer to Prusa Connect. If you do not want to add the printer to Prusa Connect now, you can do so at any time later. Hit No and skip this step.
For more about read the article Prusa Connect and PrusaLink explained.
To continue with the instructions to add the printer to Prusa Connect, hit Yes. And follow the instructions on the printer screen. Ensure you have the Prusa mobile app ready on your phone.
Wizard - Selftest start
Wizard - Selftest start

The printer will prompt you to run selftests and calibrations for all important components. The entire process takes a few minutes, with some parts requiring direct user interaction.

NOTE: While testing the axes, make sure that there is nothing in the printer obstructing the axes movement.
WARNING: Do not touch the printer during the self-test unless prompted! Some parts of the printer may be HOT and moving at high speed.
The wizard starts with the fan check, Z-axis alignment and the X&Y axis test; all fully automatic.
Hit Yes to run the selftests and calibratons.
Wizard - First layer calibration
Wizard - First layer calibration
Wizard - First layer calibration
In this part of the wizard, we will adjust the height of the first layer. Place the filament spool on the spool holder. We recommend brightly colored PLA or PETG for easier printing and better visibility.
Insert the filament into the extruder and select LOAD.
Wizard - First layer calibration
Wizard - First layer calibration
Wizard - First layer calibration
Wizard - First layer calibration
As the extruder begins to extrude filament from the nozzle, turn the knob until you reach the ideal gap between the nozzle and the printing plate - that is, the perfect first layer.
Read more about the perfect first layer in the 3D Printing Handbook for MK3.5S.
When you have finished adjusting the layer, examine the result and compare it preferably with the 3D Printing Handbook.
The printer will ask you to repeat the adjustment of the first layer procedure. In case, you achieve the best result, select NO.
Wizard complete
Wizard complete
The printer is now fully calibrated. Follow this guide to the end to load a filament in and start a test print.
Congratulations! Your printer is finally ready to print. Hit CONTINUE and let's move on.
Reward yourself!
Reward yourself!
It looks like you have successfully assembled and connected everything. No doubt ;). Congratulations! You deserve a big reward for that. Eat all the remaining gummy bears... and don't forget to share with those who supported you during the assembly.
Did you know that Haribo gummy bears are one of the most important parts of the Original Prusa printers assembly instructions.
PrusaSlicer for MK3.5S
PrusaSlicer for MK3.5S
PrusaSlicer for MK3.5S
PrusaSlicer for MK3.5S
Ready to print your own models?
Visit help.prusa3d.com once again. Download and install the latest Drivers & Apps package onto your computer. This package includes the PrusaSlicer app.
Open the PrusaSlicer app. If you’re running it for the first time, Configuration Wizard will show up. Visit the Prusa FFF tab in the Wizard, select Original Prusa MK4 in the 0.4mm nozzle version (the default nozzle size) and hit Finish to start using the MK4 printer profile.
Make sure the Original Prusa MK3.5 is selected in the Printer menu on the right, when slicing for the MK3.5.
Import a model of your choice into PrusaSlicer, adjust the settings if needed, hit Slice and export the G-code file onto the USB drive to print it on your MK3.5.
Print your first model
Print your first model
For the first print, we have prepared a predefined test model. Download the model and upload it directly to the printer.
Upload the G-code to the printer.
You can upload G-codes using different methods: USB drive, PrusaLink, and Prusa Connect.
Run the print.
Join Printables!
Join Printables!
Join Printables!
Join Printables!
Don't forget to join the biggest Prusa community! Download the latest models in STL or G-code tailored for your printer. Register at Printables.com
Looking for inspiration on new projects? Check our blog for weekly updates.
If you need help with the build, check out our forum with a great community :-)
All Prusa services share one user account.
Was this guide helpful?

Comments

Still have questions?

Still have questions?

If you have a question about something that isn't covered here, check out our additional resources.
And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.

Contact us