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Divot on side of lego

MountainBricksMountainBricks
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I bought a bulk batch of used lego and on the side of many of the lego is a distinct oval shaped divot. Does anyone know what these are

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  • 4 Comments sorted by Votes Date Added
  • Jay37Jay37
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    I've seen these too and they seem to appear on older pieces, particularly bricks. I assume they are remnants of an older production process which has now been improved.
    Anybody else have a theory?
    James
  • StellarStellar
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    I think you are right James
  • AladineAladine
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    it's the mold pip (mostly for parts from the pat pend era). Nowaday the mold pip (injection pip) is normally in the middle of a LEGO logo on a stud.
  • McflyproductsMcflyproducts
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    It is the mould pip indeed, and with earlier plastics the mould shrinkage will appear as a round or oval, slightly lighter colored.

    Even new larger parts will get it over time, but much less as the early parts. The combination of current ABS and knowledge makes shrinkage almost gone. This is the same reason why LEGO dont make large plates with injection moulding, but via high pressure thermo forming :-)

    Cheers, George
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