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Even cheaper than Walmart soup spoons!

Posted by Al Sekela (A) on May 9, 2004 at 09:39:16

In Reply to: Pop Can based Rollerball isolation for Transport posted by PeAK on May 8, 2004 at 19:28:42:

Thanks for a great idea!

The other posters raise important issues for use of this tweak with heavy components, but the Toshiba device is so light that I don't think plastic deformation of the aluminum is a concern.

You might want to try damping the can bottoms with polyurethane construction adhesive, such as OSI's PL Premium brand. It costs less than $3 for a tube at our local home improvement store, and Home Depot carries it. Just gun some out onto the bottom surface and let it harden before you turn it upside down. You might also want to polish the concave bowl surface with steel wool.

I made some roller devices for my heavy gear from stainless steel soup spoons, 6/$1 at Walmart and really unsuitable for table service outside of prisons, quarter-inch acrylic sheet (local salvage yard or the scrap bin at a local plastics fabrication house), and the polyurethane construction adhesive. Cut the handles off the soup spoons with a hacksaw and smooth the edges with a file. Cut the acrylic (Plexiglas or similar) to the right size with a very slow-speed band saw or portable jig saw (otherwise it melts and fills in the kerf behind the saw!). Tack the spoon bowls down to the acrylic sheets with a little adhesive. Line them up and use a board on top to get them all at the same angle. After the initial adhesive cures, fill in the remaining gaps under the bowls with more adhesive.

These devices are vertically stiff and acoustically dead. I polished the bowls and bearing balls with fine steel wool, and the bearing balls roll freely. I use them in damped aluminum struts that replaced my Lovan rack shelves, and the improvement in clarity and detail from my Wadia 861 was remarkable.

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