Gerhard Fiedler wrote:

>The tricky thing here is that the force these "springs" apply to
>the cables has to be constant (that is, independent of the extension of the
>"spring"), and should be adjustable. I'm not sure such a thing exists.
>
>Gerhard
>  
>

Google "Tool Balancer"

Or check out part number 6739A41 on www.mcmastercarr.com

Aaron
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