EDITED for clarity & apologetic pre-script:
P.S. (I tend to throw phases like "totally bat-puckie crazy" around rather freely, and I didn't mean to aggress [to initiate an attack, war, quarrel, or fight]. I'm sorry if it came off as overtly personal. :sad1: My bats were referring to the idea, not your general demeanor or state of being. But, if even MY bats don't like it...
)
Have you never played a couple of hours with a heavy guitar around your neck?
Umm, 2 hours X 300 times a year X 20 years would be 6,000 times. Only it's more like 40 years, 365 days in a year and I used to practice 8 - 12 hours a day, including a fair amount standing with a band & either a 10 lb. P-bass or 8 - 9 lb. guitar on a strap. Round it off to 10,000 times... My left shoulder is 1" lower than my right.... :doh: :toothy12:
If you already have a Foredom or a Dremel with the flex shaft and hanging stand, this isn't an impossible job at all. If you don't have one, it looks like a little north of $200 will get one. I've never heard of a hole-cutting bit for 30,000rpm machines but you need one. Put your left hand down on the body for support and your right hand on top of that.
The biggest non-time & non-money problem I see would be that in taking out wood from the center of the guitar, the result is a hollow-ish center and a solid, heavy perimeter. I don't know what that would sound like, but I do know that there are dozens or hundreds of guitar designs with the exact opposite - heavy center, hollow wings. My guess would be there's a reason for that, but maybe not.
If you held a gun at my head and said "Lose two pounds!" I would use a hole-cutter bit and start taking 1.5" deep plugs out around the perimeter
from the back and then connect them via HAND chisel to make chambers, chamfer the inside edge of the chambers then cover the back with a nice 3/32" hardwood plate. Besides the gun, you're gonna have to buy me about $300 - $500 worth of tools. Since you've got the gun I won't charge you for the 20 - 25 hours it's going to take, but if it sounds like crap you don't get to shoot me, it's still your fault. :icon_thumright:
If you keep an eye on Ebay, there's a whole category of nice bodies that have been goinked by bad ideas and/or bad craftsmanship. It can be instructive, in a way. As can the observation of how gadzillions of trained smart people have approached the question of "light solidbody guitar?" As can the observation that discomfort is part of playing - Jerry Garcia played a 13 lb. guitar for 15 YEARS because he liked the sound, many of Mahavishnu John McLaughlin's greatest early momos came with either his Gibson EDS 1275 doubleneck or his THIRTY-POUND Rex Bogue "Double Rainbow."
When you ask a question and twenty people all give you the same answer - "There are other pretty tops" - it's not because we conspire against you.