Beastie

[cropwell]

I wouldn't think so, you are looking for a dense mass, foam is light and full of gas.

My thought was that the closed cell structure of the foam would act as damping. I know that traditional thinking for acoustic damping is to add mass, but nowadays there must be some material that would act as an vibration absorbing foam. I must get some of this foam and fill a metre length of 50x50x3 box section to see the effect on ringing. I'll bet it would f**k up a set of tubular bells

Rob

[mekanik]

You could be right Rob, i seem to recall something on the forum about damping, will have a look in my Docs to see if i can find it.

[mekanik]

Rob
Have a look here
http://solutions.3m.com.sg/wps/porta...beNVTNM5RSXLgl

[cropwell]

Hi Mike,

This is the stuff used for sound deadening on car panels and the like. My friend has a garage and uses Dynamat. It is expensive.

I am looking at the weight aspects and also it is fairly easy to squirt this sort of stuff http://www.screwfix.com/p/no-nonsens...ld-750ml/45865 into a box section.

When I get to it, it wouldn't hurt to fill the gantry and frame, especially if you put in plastic tubes to run wiring. I am really looking to find out if anyone has already tried it.

Rob

[mekanik]

If anyone is interested PM me your e-mail address and i will send you the Doc i was looking @ I tried over on the 3M site but couldn't find the stuff used in the article. it was 3M Scotchdamp ISD-112 and it was 1mm thick.
Mike

[pierantoine]

Hi,
I remember that i've seen something interesting one year ago... about filling a milling machine with an epoxy concrete...
http://www.cnccookbook.com/CCMillEpoxyFill.htm