Heatbed V2 Assembly (Full Aluminum)


List of parts:

  • Scalar S : 1 silicone heater (190x190mm 250W 220V)
  • Scalar S: 1 aluminium plate (220x230x2mm) (Base)
  • Scalar S: 1 aluminium plate (220x230x3mm) (Plate)
  • Scalar M : 1 silicone heater (300x200mm 400W 220V)
  • Scalar M: 2 aluminium plates (300x220x3mm) (Base + plateau)
  • Scalar L : 1 silicone heater (300x300mm 600W 220V)
  • Scalar L: 2 aluminium plates (300x330x3mm) (Base + plateau)
  • Scalar XL : 1 silicone heater (400x300mm 700W 220V)
  • Scalar XL: 2 aluminium plates (435x320x3mm) (Base + plateau)


  • Scalar XL Premium : 1 silicone heater (400x300mm 700W 220V)
  • Scalar XL Premium: 2 aluminium plates (435x320x3mm) (Base + plateau)


  • 1 aluminium sheet used for cooking
  • 1 wired thermistor (1 meter)
  • 1 pen
  • 1 pair of scissors
  • 1 50mm polyimide/Kapton tape
  • 1 piece of aluminium tape



Take the aluminium plate corresponding to your print surface.

It has only 4 holes, one on each corners.




This pate has 1 face with a protection film and the other face with a raw surface.

In this picture you can see the face with the protection film.

This face is used for printing.



The other side with raw aluminium is destined to be the bottom of the heatbed where you are going to stick the heating element and the thermistor.

Take the raw side of the plate in front of you.





Place the heating element (orange) – don’t stick it yet – and place it in the middle of the aluminium plate..

Place some markings so that the silicone heater is at the center of the aluminium plate.

This pictures shows the example of the Scalar XL.

The silicone surface is smaller on all sides than the aluminium plate..



This picture shows the example of Scalar M.

Here the silicone heater has the same length but smaller width.

Make sure to have enough space around the corner-holes for later use.



Place some markings on the sides of the silicone heater.

This will help you later on to stick the silicone heater in the center.



Do the same at the top and bottom of the plate for Scalar M and also on the sides for Scalar XL.





Now take your thermistor .

Place it so that the end of the thermistor is located at 1/3rd of aluminium plate length from the side.




This will allow you to reuse the maximum of the thermistor wire’s length and keep a goo thermistor placement..






Take a small piece of aluminium tape (or Kapton / Polyimide tape) that will help you secure the thermistor end.

The main point in using these kind of tape is that they can support heats over 110°C..



here a picture showing the overall placement of the thermistor.





Once the thermistor ending secured your assembly should look like the picture.





In order to finalize thermistor placement, it’s interesting to stick the wires right on the edge of the aluminium plate..










Here is a picture showing the thermistor fully secured.







Now you can remove the 3M tape from the silicone heater .




Place it on the aluminium plate using your previous markings to make sure it’s centered.

make sure to properly press on all the surface of the silicone hater in order to evenly stick it on the aluminium plate.



Th thermistor should be right between both aluminum plate and silicone heater.

This ensures that the thermistor is properly secured and will provide proper measurements.




in order to optimize the thermal insulation, you can use aluminium sheets used for cooking so that it covers the maximum surface of the silicone heater..

Make sure that you remove the part of the aluminium sheet that extends over the silicone element..

This will help you to secure the aluminium sheet using kapton tape.


The aluminium sheet should have 2 different faces

  • 1  « mirror » side
  • 1 « mate » side
  1. Make sure to place the « mirror »  side toward the silicone heater. This will increase the efficiency of the aluminium sheet and will reflect a maximum of Infra-red radiation toward the useful part of the heatbed.
  2. Then push it against the silicone heater. it should stick naturally to it.
  3. Cut the excess of aluminium sheet that goes past the silicone heater surface.
  4. Secure the aluminium sheet with kapton tape and make sure to avoid air bubbles.
  5. Cut the parts of Kapton/polyimide tape that goes past the aluminium plate using a scalpel or a cutter.