On 2006-09-27, Keith G wrote:

I'm in the process of chopping a nice little DD deck:

http://www.apah69.dsl.pipex.com/show/Chopper.JPG

Which is already much better since I removed the dodgy 'suspension' and
clamped it directly to a piece of, er, kitchen worktop - which has produced
a much richer and 'fatter' sound already, but I need some feet which will
work at least as well as (and look better than) two bath sponges and a
packet of Fusilli...??

Nick G has mentioned squash balls which, sitting in little wooden rings,
would work but I'm curious about wooden cones, which I can buy for a coupla
hundred quid or make for about 50p (still not decided...) - what I want to
know is which way up for best 'isolation' (energy dissipation) - points up
(from a concrete paving slab) or points down...??

I have tried out squash balls cut in half under certain bits of kit [1].

In a previous career in semiconductor devices, the group I worked in used
to mount vibration-sensitive kit on solid slabs which were suspended on
compliant air-filled rubber "springs". This certainly worked.

[1] I couldn't hear any difference with the half-squash-balls under
anything I had (but I don't use my Thorens/SME/AKG these days so I
didn't try that).

[2] Optical lithography kit which aligned wafer and mask to sub-micron
precision.

--
John Phillips