Extended Heat Bed Kit - 120 x 250mm Print Area (3mm thick) - Select Mini

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Were expected to be back in stock the first half of December but still waiting on the custom smooth rods.
Calculated at Checkout


Soldering is required to attach the heater and thermistor wires.

The thermistor is already attached.

Compatible with:

  • Monoprice MP Select Mini V1
  • Monoprice MP Select Mini V2
  • Malyan M200

The actual usable build area of the bed is increased to at least 120mm x 250mm. The bed is 3mm thick aluminum and has two 40 watt PCB heater circuits and thus two power inputs.

Connecting to only one heater using a 12V 10A power brick such as the one originally supplied with the Select Mini V1 or the 10A Winkeyes available on Amazon, the bed should be able to maintain 50° - 60°C depending on the ambient room temperature. Using a 12V 7A power supply such as the one supplied with the V2 and the late model V1 should be able to maintain at least 50°.

Connecting a second power supply directly to the second heater input on the bed should allow the bed to reach 100°C ±. Using only a power supply connected directly to one heater input the bed should be able to maintain 65° - 75°C depending on the ambient room temperature. Using the heater input from the mainboard on the other heater will allow you to control the temperature in the range of 75° - 110°C, again depending on the ambient room temperature. This may not be the route you want to take though because it will mean the bed heater directly connected to the power supply will remain on after the print is completed. 

Another way and probably best way if you wish to have the bed temperature higher than 60°C is to use a 12V 150W or higher power supply connected to a relay that will replace the stock power supply and enable both bed heater inputs to be used and powered off when a print is complete. Instructions will be available later but please don't purchase yet unless you are comfortable figuring this part out on your own.

Shipping is not included in the price. Shipping cost will be calculated during the check out process and cost will depend on your shipping address. Example: California may be around $8.50 and to New York about $18.00. These are only estimates and may be different than what is determined at checkout. You will be given the shipping price before submitting the order.

1 Review Hide Reviews Show Reviews

  • 5
    Great kit

    Posted by B on Mar 9th 2018

    Kit was great. Packaging was excellent and everything felt like a drop-in replacement. Some soldering was required to get the bed set but I preferred this due to where I wanted to run the wires. The kit definitely feels/looks like a match to stock parts.