Weight relieving or chambering the body

So the body with the control cavity route was 4 lb, 7 oz.  

I decided to chamber the body.  

I bought a 1 3/8" forstner bit from Freud to use for the switch hole and it is a much better forstner bit in my opinion.  It hogs much better than the Rockler cheapo specials.

Here is a picture of making mahogany chips.  

Notice in this picture, some small router freehanded cavity outlines that I would use later with the template follower bit for clean up.

Here is the body after forstner use on the 3 weight relief cavities.

For cleanup I used a template follower bit using the freehanded cavity outline, then routed down to a further depth.  

There is probably between 0.5 to 0.75 inch (closer to 0.75 inch) left on the back.

Also I left a 1 inch border in the body cavity to the sides, and a solid block for the tail or strap pin. 

The pickup area, bridge, and stop tail will all be to solid mahogany underneath.

I think this is a good compromise of weight relief and keeping for tone of a Les Paul.  I don't want it to get too hollow sounding.

The body at this point weighs 3 lb, 8 oz so I took out nearly a pound.