I previously asked about bricks in invisible places. Now I have second question. There are some bricks that are hardly visible, and in no way contribute to strength of a model. For example lime brick inside space shuttle or red bricks in the launch platform.

Note, as you can see in instructions step 14 - there is nothing on the other side of red brick. It connects only to the long gray technic brick.

Is there any purpose? Are these bricks there to symbolize something? What's the benefit that would justify cost?

lime brick

red brick

  • 3
    Don't know about the lime brick, but the 2nd picture, it's a pin, it holds something together. The designers must have thought it DOES contribute to the structural strength... It's red because that's the common color for such pins... Feb 16, 2018 at 14:27
  • @MichaelVerschaeve when I'll get back home, I will take picture from the bottom side. I'm quite certain that it does not hold anything together, and there were no bricks it could hold left.
    – Mołot
    Feb 16, 2018 at 14:33
  • I don't know the set, but in other sets parts like the lime tile, restrict movement of other parts. Feb 16, 2018 at 14:42
  • @MichaelVerschaeve lego.com/biassets/bi/6128942.pdf step 14 - red part is covered with nothing held by it under the plate.
    – Mołot
    Feb 16, 2018 at 14:50
  • 3
    The lime piece was probably to try to reduce the movement of the 'towbar' piece (the grey one in the middle), supposed to hold the shuttle on the booster. Maybe at one point during the design the towbar wasnt tightly centered by the two yellow pieces and that centering was done by two pieces like the lime things, but then forgotten to be removed afterwards. The instructions are susceptible to being 'frozen' while not in an optimal state for economical/deadline reasons, so don't look at the instructions as an optimum, but as a starting point for your creativity Feb 16, 2018 at 15:29

1 Answer 1


I have always assumed that the pieces in question were place holders to simplify assembly. Their bright color and location help insure proper alignment for less experienced builders. One must realize that the set is marketed to 6-12 year old's. I imagine their testing has proven that such aides are very useful for younger builders.

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