G'day again,

Come to think of it, I supplied a friend with a chunk of thin MDF (Medium Density Fibreboard) to use as a 'wobbleboard' for a recording gig. MDF has about the right 'wobble' and a reasonable sound ... but only comes in sheets thin enough to wobble when it is used as protective packing around something like sheets of acrylic sheeting (Plexiglas® and similar. I was able to saw the MDF with a normal ripsaw and glean up the edges with a Surform tool and sandpaper.

Unfortunately, I have no idea of how well the bonded wood material would last ... The recording studio got him to give them a few representative "sample" wobbles ... then sucked the sound file into their synthesiser ... and used digitally synthesised and modulated "wobbleboard" in the recording!

Regard(les)s,

Bob Bolton