Well gotta tell you your rolling the dice when it comes to what you'll get under the finish of a RG5XX
For the most part You won't run into a ton of filler as some people might say simply because thats a rare even with Ibanez Bodys that was blown out of proportion from Ed Romans web site. Seriously do you think a company would go as far as to start out with cheap wood that needs filling and leveling on every guitar? That wouldn't be cost effective at all.
Now that that is cleared here's where the roll of the dice comes in. Expect a 2 or 3 piece body to begin with that has a thin single ply sheet of veneer on both the top and the bottom. ( I Know maybe cause I've stripped oh ummmmm 30 or so this past year). Go easy once you break through the color and into the white coating, the wood is just underneath that.
DO NOT waste your money of chemical stripper's if the body hasn't already been stripped and re-painted at least once. Ibanez finishes are like armour when it comes to a chemical strip, You will swear that finish is made of steal....
Once in a great blue moon you run across a special body under that RG5XX paint job. This is no joke, I've stripped one and found a beautiful Flame Maple body that had a blemish on the back. I'm guessing it was a J-custom that got yanked because of the blemish then thrown into the RG570 production line for a solid color paint job. I've also run across other exotic woods under the paint which seriously made me want to replace the body (it was a customers, can you say Mahogony?) and keep it for my own since it was getting a solid finish again.
Going for the bare wood look is fine but just because it will collect dirt and you'll sooner or later want to clean it up I would hit it at least with a coat of sanding sealor or wipe it down with Tung oil as suggested above. Good luck on your new custom! For some stripping tips using the sanding method click here
(Edited by becalvert at 2:11 am on Feb. 27, 2002)