MK3 Aluminum Heated Bed 214x214x3mm – Dual Power 12V / 24V PCB Hotbed for Prusa i3 & 3D Printers

Overview

Achieve flawless first-layer adhesion and stop print warping with the MK3 Aluminum Heated Bed. Measuring a standard 214  mm times 214 mm, this board is crafted from a rigid 3mm aluminum plate that serves as both the heating element and the printing print bed.

The dual-power circuit design gives you the flexibility to wire it for either a 12V or a 24V system. Whether you are building a custom DIY 3D printer or replacing a warped bed on an existing machine, the MK3 aluminum plate delivers exceptionally uniform thermal performance across the entire printing area.

Key Features 

• 2-in-1 Integrated Surface: Rigid 3mm aluminum sheet eliminates the heavy weight and clipping hassle of traditional glass-and-PCB combos.

• Dual-Voltage Versatility: Can be wired for 12V (high current) or 24V (faster heating, lower current) setups to match your power supply.

• Uniform Thermal Distribution: The aluminum core spreads heat evenly to the outermost corners, preventing cool zones that cause edges to warp.

• Pre-Drilled Counter-Sunk Holes: Features 4 corner mounting holes and 1 center-edge mounting hole for precise 3-point or 4-point bed leveling.

Technical Specifications ⚙️

Wiring Configuration Guide 

• For 12V Operation: Solder the positive line ($+$) to Pad 1, and the negative line ($-$) to Pads 2 and 3 tied together.

• For 24V Operation: Solder the positive line ($+$) to Pad 2, and the negative line ($-$) to Pad 3. (Pad 1 is left disconnected).