I've been building the Batcave – Shadow Box (76252):

Box photo

I have gotten to step 264 and it seems odd to me that the single back bricks have a hole in them as they seem to go in sideways in the picture blocking the holes - hence only a single solid brick was really needed?

1 Answer 1


This is likely correct. Here's the instruction step that you mentioned:

Step 264

In order to keep costs lower, TLG tries to limit the number of unique elements in a set and in an individual bag within a set.

The part you mentioned could have been a 1x1 system brick, but using a Technic brick here also works fine. Bag 9, the bag used for this step, already includes 1x1 Technic bricks as they are needed for subsequent steps, such as 265:

Step 265

None of the other steps related to bag 9 use a 1x1 System brick. It is likely that the 1x1 Technic brick was used in step 264 in order to avoid having to include another element in this bag.

  • 16
    As well as keeping costs low, it also reduces the risk of using the wrong part by mistake, leading to much frustration later in the build Commented Nov 2, 2023 at 3:05
  • @MatthewJensen UGH, you just gave me flashbacks to building the Colosseum. I think I averaged 2 wrong bricks or plates per 3 segments of the build. Commented Nov 2, 2023 at 21:08

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