I like to use a wooden block, say 8 to 10 inches long, for rough sanding, especially on the forearm and flat area under the butt. This is just to true everything up, and I will even smear soot on the wood so any "whoopdy do's" will show up. At this point, I will wrap sandpaper around a wooden dowel to get around lock panels and cheekpieces and such. After all these areas are sanded true, I will go with a finer grade of sandpaper and switch to a rubber sanding block, or just roll up sandpaper in a tube shape for curvy areas. When I get finer than 150 grit, I switch to using sandpaper in just my hand and fingertips.
I make an exception to this process when blending wood to metal, like poured nose caps and wedge escutcheons. Since wood usually sands away faster than metal, I will use a "flat backer", like a file wrapped in sanpaper, all the way to the final finish, with emphasis on the metal. This helps keep a straight line where wood meets metal, and maybe someday I will actually acomplish it. :rotf: Bill