I happened to catch Nick and Budi working on the multitouch table yesterday.
Apparently just before I arrived, Nick had drilled dozens of holes into acrylic strips. The strips will surround the glass surface and infrared LEDs will be mounted in the holes.
In the foreground of this picture you can see one of the strips. Nick is holding a test piece; he just soldered in a couple of LEDs to make sure the acrylic wouldn’t melt from the heat.
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