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Unread 24-02-2009, 00:59
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Re: Methods of adding ballast to underweight robots

I think you could use pennies ... They are just about 25% less dense than lead so that's not bad. Better than steel which is something like 30% less than steel
Steel bolts are cheap though...put them or pennies in a PVC pipe...

tungsten is what you really want... but expensive...twice as dense as copper..
pretty cool stuff...

R