I have an old LEGO winch that looks like #73037

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It has been "restrung" but it is very stiff and it looks like it has some of the old string stuck between the rotating and non-rotating parts. It also feels a bit gritty so there might be dirt stuck in there.

It looks like the top on each side might come off and if so I would be able to remove the stuck string and clean it.

Does anyone have any advice about taking it apart without damaging it?

1 Answer 1


You just can't. This part is fused together with sound-waves so it doesn't separate anymore.

Source and more info: fusing Lego together

  • Thanks for the advice. The winch may be too old to have been fused by this process but I can't know for sure. Nevertheless, I'm not going to try and open it!
    – Mike Crowe
    Dec 6, 2015 at 15:27

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