Form 2 Refurbished or Second Hand

General Discussion
4

Hello Benjamin.
Calibration of the carrier tray is easy.

  1. Before removing your existing tray, measure the distance from the top of the tray to the glass window on 4 corners.
  2. Make a test print consisting of 4 squares of 1 mm thickness in the 4 corners of the build plate. Print this. Check the thickness of the first layer and of the finished squares. makes pictures of each.
  3. Remove the tray and resolder your smd contact.
  4. Reseat the tray and set it to the same height as before
  5. Run the same test print as before. If your first layer is non existent, move your carrier tray down. If it is too thick, move it up. Once the first layer is the same as before, run a full print and verify the 1 mm thickness of the square.
    The tray screws are M3 x 0.4, I believe. 1 turn of the screw is 0.4 mm.
    Note that all Formlabs build plates are in fact not flat. So use the same one for before/ after comparision.

Generally speaking, the height of the carrier tray will influence the compression of the first layer in the 4 corners of the build plate ( level of the plate ). A software setting is available to change the height of the build platform as well but this is a general setting ( does not influence the level of the platform ).
The VAT being elastic, there is quite a bit of play allowed with this.

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