Re: Al Extrusion Vibration Damping

Sand is about the most common solution I have seen in machine tools.
Years back, some machine tool builders used to leave the "sand" cores
inside the casting as a way to dampen vibration. Some of the cheaper
weldment type machines I have seen also suggest in their literature to
fill the tubes with either sand or concrete. For me, I like ways out
of things that don't work out.

If the sand doesn't deaden the vibrations, you could take the cap off
and empty it out. Concrete on the other hand could prove to be
difficult to remove :-(

I have never seen fluid used "Statically" in a dampening system other
than in a shock absorber type device. I would try sand before
anything else, it's cheap, easy to get, and easy to get rid of if it
doesn't work out.

Chris