#1
I'm basically taking my first guitar.(a dean vendetta xm) and am making it into a good guitar. i already got the action set up PERFECT. And i'm putting a zackk wylde emg 81-85 pickup set in it. But i wanna sand the neck down thinner cause its to thick. I know once i sand it i need to put tung oil on it. but i dont know how much. and i dont know how thin i should sand it. like i have a charvel model 6 and it has a PERFECT neck and i wanna get it to that. But i dont wanna risk sanding it down to the truss rod. and if i sand it will it warp cause theres less wood to keep the strings from bending? and what sand paper grits should i use and stuff like that. I prety much need a step by step guide. So if you'v dont this to you neck could you help me out?
#2
Well, you can probably get it to the same size as the charvel, since trussrods really don't differ depth wise too much I believe.

If you want to check the depth, go near the base of the neck and drill a very small hole until you reach the truss rod slot. Try not to drill through the truss rod. Also, if it's a bolt on, do it on the heel so you can't see it. That's if it's a double action rod though... I am pretty sure you'll be alright.

Sandpaper will take forever. Start low grit and work your way up. 60 grit can do quite a bit of hogging depending.

It sounds like you're getting in a little too deep. But with a little research, you will be alright.