Answers.Body: <p>As far as I know, it's not intended to have any building function, it's just there to prevent any excess plastic at the fill hole from getting in the way of other pieces.</p>
  
  <p>I can't find a good close-up picture, but that particular piece is filled through a hole in the mold at that location, which you can kinda see in this picture.</p>
  
  <p><a href="https://i.sstatic.net/qOkeg.png" rel="noreferrer"><img src="https://i.sstatic.net/qOkeg.png" alt="enter image description here"></a></p>
  
  <p>Without the small recess, if the <a href="https://en.wikipedia.org/wiki/Sprue_(manufacturing)" rel="noreferrer">sprue</a> were to leave behind a small nub, it could prevent sticking the piece next to another piece.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-11-30T17:49:07.657Z
Answers.Text: Huh, I just cracked into 40311 Traffic Lights this week and noticed a very similar notch in the base of the signpost (Tile, Modified 2 x 2 with Bar and Stud with Stop Ring). I guess it serves the exact same purpose.
Answers.UserDisplayName: LegoSonicBoy
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-11-29T02:20:40.497Z
Answers.LastActivityDate: 2018-11-29T02:20:40.497Z
Answers.UserDisplayName: Alexander O'Mara
Body: <p>It's nowhere as deep as the garage door notches they designed to let the doors slide up and down.</p>
  
  <p>How does the notch fit into the initial set that the part was first introduced and does this shallow groove have specific function?</p>
  
  <p><img src="https://i.sstatic.net/r6ADq.jpg" alt="the piece in question"></p>
  
  <p>For reference, this is "Plate, Modified 1 x 2 with 4 x 4 Dish at 90 degrees" (30209).</p>
  
Tags: <piece-information><manufacturing><snot>
Title: Why is this piece notched?
UserDisplayName: Major Stackings
ThreadText: # Why is this piece notched?
  
  (Asked by: username_0 on 2018-11-28)
  
  It's nowhere as deep as the garage door notches they designed to let the doors slide up and down.
  
  How does the notch fit into the initial set that the part was first introduced and does this shallow groove have specific function?
  
  ![the piece in question](https://i.sstatic.net/r6ADq.jpg)
  
  For reference, this is "Plate, Modified 1 x 2 with 4 x 4 Dish at 90 degrees" (30209).
  
  **Tags:** piece-information, manufacturing, snot
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2018-11-29. Score: 7 | Accepted answer
  
  As far as I know, it's not intended to have any building function, it's just there to prevent any excess plastic at the fill hole from getting in the way of other pieces.
  
  I can't find a good close-up picture, but that particular piece is filled through a hole in the mold at that location, which you can kinda see in this picture.
  
  [![enter image description here](https://i.sstatic.net/qOkeg.png)](https://i.sstatic.net/qOkeg.png)
  
  Without the small recess, if the [sprue](https://en.wikipedia.org/wiki/Sprue_(manufacturing)) were to leave behind a small nub, it could prevent sticking the piece next to another piece.
  
  > **Comments:**
  > **username_2**: Huh, I just cracked into 40311 Traffic Lights this week and noticed a very similar notch in the base of the signpost (Tile, Modified 2 x 2 with Bar and Stud with Stop Ring). I guess it serves the exact same purpose.  
  
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