Re: [CAD_CAM_EDM_DRO] Re: Re: Al Extrusion Vibration Damping

Rob Sarten wrote:

>Hi All,
>
>Have come up with another couple of ideas.
>
>One idea is to use candle wax. It's a pretty dense dead material. Another is silicon sealer.
>
>Correct me if i'm wrong but anything hollow is going to have a low to mid resonant frequency and if its solid it will be in the mid high frequency range.
>
>

Not necessarily true. A solid bar will generally have a LOWER natural
frequency than a
hollow pipe of the same OD. It is just like a pendulum or a tuning
fork. Adding mass will
lower the rate of the vibrations. If you made the bar or pipe stiffer
to bending, the natural
frequency will go up. But, adding mass in the center has little effect
on stiffness.

Jon