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How would I go about building a mini elavator for a school project?

I need to build an elavator small enough to fit inside a box, but with the ability to pick how tall. I can use pretty much any common materials. It needs to be able to hold a shooter marble.

Re-design7 years ago
Some wood, string, a box make one out of that.  How elaborate do you need it?  Powered or unpowered?

Give us the full details otherwise we're just guessing and wasting our time.