Original Prusa MK3.9

About your printer

Shipping information

SHIPPING UPDATE (August 4th, 2025) During the past month, we successfully shipped the vast majority of the delayed CORE One Assembly Kit and Conversion Kit orders. These orders…

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Flexible steel sheets (guidepost)

The Original Prusa magnetic heatbed is designed to hold a removable double-sided flexible spring-steel sheet, designed specifically for easy removal of printed objects from the…

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Customer support

If you have any questions about 3D printing in general, about your order, shipping, calibration, or troubleshooting of your printer, don't hesitate to contact us! Printers that…

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VAT (Value Added Tax) & Customs fees

SD cards and USB drives

FAQ - Frequently Asked Questions

Input Shaper (MK4/S, MK3.9/S, MK3.5/S, XL, MINI/+)

Power-modes

Food safe FDM printing

Original Prusa Serial Number

Warranty

Printer Handbooks

Power Panic

Nextruder filament sensor (CORE One, MK4/S, MK3.9/S, XL)

Nextruder silicone sock (CORE One, XL, MK4/S, MK3.9/S)

GPIO Module

Accelerometer (CORE One, MK4/S, MK3.9/S)

Stuck filament detection #31101 (CORE One) #26101 (MK4S) #13101 (MK4) #27101 (MK3.9S) #21101 (MK3.9) #17108 (XL)

Types of printers and their differences

Order status

Buddy firmware-specific G-code commands

Loadcell (MK4/S, MK3.9/S, XL)

xBuddy and LoveBoard electronics wiring (MK4/S, MK3.9/S)

LCD menu (MK4/S, MK3.9/S)

Payment options

Factory repair

Experimental settings (MK4/S, MK3.9/S, MK3.5/S, XL, MINI/+)

UPS backup for your printer

FAQ - Extended buyers-guide

Printed Solid Service center USA

Cancel Object (MK4/S, MK3.9/S, XL, MINI/+)

E-shop order creation

Touch screen (CORE One, MK4/S, MK3.9/S, MK3.5/S, XL)

Model preview

Prusa Printer Upgrades

xBuddy status LEDs (MK4, MK3.9)

Vouchers/Discounts

Printer repair centers

Purchasing and managing licenses for Prusa Academy courses

Flashing custom firmware (CORE One, MK4/S, MK3.9/S, MK3.5/S)

Payment error