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I once talked with a Lego Builder at the Florida park. He told me they use a glue that actually melts the Lego blocks together. With that in mind, I searched and found this article. It says Lego Park Model Makers "use a solvent based plastic weld. It heats the bricks up so the edges bind together. Obviously it has to be very strong to withstand weather ...


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I found this question and used Joubarc's and Peter's answer to guide my pump build: The video of it's operation is here. As per Joubarc, it was very tricky to get right. Here are some subtle things I learnt/did during the build: The blue down wedges in the ball feed are not symmetric horizontally. Putting them on alternate layers helps stop the 14mm ...



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