Not much to report this weekend, except that the top is now 1663g after removal of the bass bar. The bar was therefore 245g.
I did some more hocus pocus chladni measurements on the top because I can.
Have a look at this video (unfortunately we can't embed video on this site yet) to see how the first mode looks in stop-motion!
http://www.youtube.com/watch?v=aHbpC_0E7wM