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Touch tables are not a tabu subject here as we’ve talked about them quite a few times. But they are sensitive when you talk about pricing, which is situated usually North of 10.000 $ mark, some even doubling or tripling this number, so if you’re a fan you’ll probably stay this way if you don’t do something like building your own touch table for cheap. 1500-2500$ is not exactly cheap today, but it is way cheaper than waiting for Microsoft Surface to get down to a manageable price.
All you’ll need are some acrylic sheets, a projector, a powerful computer and a good webcam, a free piece of software and then your personal skills come into play when you start and assemble the whole thing. It might take you a few days or weeks of work but the final result might just make you the guy to visit when all your friends find out about your DIY touch table project. More info about what you need and how to build it is found here. Good luck with your work and please let us know how things turn out in the end if you start such an endeavor.

DIY Touch Table project
Source: Lifehacker