3D Printer Accessories Prusa Mini Hot Bed MK3S Magnetic Magnet Heating Plate PEI Bed with N50H Magnet Option Voltage 24V Power 120W 300g Weight
3D Printer Hot Bed 24V 120W PEI for Prusa Mini MK3S with Magnet Option

Upgrading the heated bed on your Prusa Mini or MK3S 3D printer can significantly improve print quality and workflow efficiency. This replacement hot bed features a PEI coating for excellent adhesion during printing, reducing warping and failed prints. The choice of with or without an N50H magnet allows you to tailor the installation to your existing setup—magnetic for quick plate swaps, standard for a fixed mount. Designed to operate at 24V with 120W power output, this heating plate ensures consistent temperature across the bed surface, which is critical for materials like PLA, PETG, and ABS.
Features and Construction

This hot bed is built to directly replace the original on Prusa Mini and MK3S printers. The PEI coating provides a stable surface for filament adhesion, while the embedded thermistor ensures accurate temperature reading. The package includes all necessary hardware for installation.
Material and Build
The heating plate uses a PEI coating that offers reliable first-layer adhesion during printing and easy removal of finished parts once the bed cools. The bed measures to fit the Prusa Mini and MK3S frame, and the electrical components are rated at 24V DC with a 120W power draw—matching the original specifications for safe and efficient operation.
Size and Practical Fit
Weighing 300g, the bed is lightweight yet robust enough for repeated heating cycles. It is designed to be a drop-in replacement for Prusa Mini and MK3S printers, requiring no modification to the printer frame. The included screw nuts (two of each size) allow secure fastening to the carriage.
Uses and Placement

This hot bed is essential for achieving the right print temperature for various filaments. Whether you print with PLA, PETG, ABS, or TPU, a stable and consistent heating surface reduces the risk of warping and layer separation. The magnetic version particularly benefits users who frequently switch between different PEI sheets or want to clean the bed between prints quickly.
Event or Professional Use
For makers, workshops, or small production runs, a reliable hot bed reduces downtime caused by failed prints. The consistent 24V/120W heating performance ensures even temperature distribution, which is critical for professional-grade prints where tolerances are tight.
Everyday Home Use
Hobbyist 3D printer users will appreciate the easy installation and the option of a magnetic bed for quick plate changes. The PEI surface works well with common filaments, and the included thermistor and power cord mean you don't need to buy extra components.
Benefits and Buying Value

Replacing a worn or faulty hot bed restores your printer's ability to achieve accurate first-layer adhesion, which is the foundation of a successful print. The combination of PEI coating and choice of magnet type gives you flexibility without needing to replace the entire printer.
Reuse and Low Maintenance
The PEI surface can be cleaned with isopropyl alcohol and a lint-free cloth to maintain adhesion. The magnetic version allows you to swap plates for different filaments or clean them separately, extending the life of each bed.
Why Choose This Product
This hot bed is a direct replacement for Prusa Mini and MK3S printers, offering the same voltage and power specs. The option to buy with or without an N50H magnet lets you match your existing setup exactly, avoiding compatibility issues.
