Slots in balljoints?

Discussion in 'Transformers Toy Discussion' started by MisterFanwank, Oct 24, 2011.

  1. MisterFanwank

    MisterFanwank Toy Industry Analyst

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    For a long time I've wondered why balljoints have those slots on the opposite side of the cups. We've seen those slots used as transformation peg holes before, but beyond that I've never seen any confirmation about why those are there.

    My best guess is when they're taking the sprue off the mold, the slot prevents suction from making removal hard/impossible.

    Any other thoughts?
     
  2. Treadshot A1

    Treadshot A1 Or just 'A1' for short...

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    Stress relief. The plastic needs it for when it's being popped on or off, as the stretch necessary, requires an opposite part to squeeze closer. That's what the hole is for, to give room for that side to squeeze together.

    It isn't always necessary, though. As you can see from my sig, some of my designs don't use slots, because of the material. Depends on the plastic, really.
     
  3. blumpy2000

    blumpy2000 PENGUINS CAN'T FLY!!!

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    Huh, learn something new everyday. I was always curious about this as well.
     
  4. rattraprules98

    rattraprules98 AKA Chr0nus

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    That's pretty much what I was thinking... but sometimes, I do wish that that they weren't there...
     

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