Low energy storage in racks.....

[zanash]

get your self a tube/ aerosol of urathane foam ....drill a set of holes in the lac top [from underneath] and carefully fill the void ....you may need to dislodge the paper/ cardboard within the void to get a good distribution. the effect is to add a small ammount of weight but increase stiffness by many times. You can also fill the hollow legs too. My foam filled lac tables out perform my old sound org table [original one] and a tnt flex design that was extremely sturdy and heavy.

[sq225917]

Gents theres no phenolic in the Lack and similar ikea products they amimo-formaldehylde resins.

Paul if you are using ball bearings between layers and they are fixed on one side then they couple not isolate. You'd have to have two axis of freedom to isolate, like a symposium Rollerblock.

[PaulStewart]

Gents theres no phenolic in the Lack and similar ikea products they amimo-formaldehylde resins.

Paul if you are using ball bearings between layers and they are fixed on one side then they couple not isolate. You'd have to have two axis of freedom to isolate, like a symposium Rollerblock.

Thanks for that Simon, good to meet someone who is as much a pedant as me. However I was told by a designer who specialises in the use of this kind of product it was phenolic. As it is the amino formaldahyde resin does the same job, so no big deal.

Mechanically after 40 years of putting these systems together, I do know the difference between coupling and isolating. the top layer "floats" on 8 ball bearings that have two axis of movment as they in turn sit on a hardish rubber pad. The point is all this allows the spurious energy to dissipate, which is why I would not wish to foam fill it as I think this may prevent that dissipation. All I know is it cost just over £100 to make and it performs really well, and as friends wives and indeed my own have said, it looks good and has great WAF.