That is really interesting...although it's also a little nuts. 12 lbs? Yikes!

https://www.youtube.com/watch?v=FGSUrwdctQI

Not really endorsing this build, but I do like the idea of building a guitar like you would build a surfboard. I actually thought that's wherre epoxy guy was going when the video started. I don't think this particular build is solid enough in the bridge area...but the idea is sort of intriguing ;-)