[Franko48]

I have been using a 90 deg air grinder with small emery disks about 2" diameter great for tight spots and small contours. If you use emery disks instead of sanding disks you won't grind away any metal. The ones I use are the "S" type

[deadbodyman]

I cant believe no one mentioned the old scuff pad trick...Fold a scuff pad in half, wrap a piece of DA paper around it. it works fantastic around flared wheel openings,any curve really....when it comes time for color sanding they cant be beat just wrap the wet sand paper around one .the density is just right and the scuff pad holds the water....
Try taking some heater hose lay it out straight and fill it with that expanding foam insulation ,you'll have a straight round block thats slightly flexable.very nice for sanding tightly curved bodylines like on an S-10
and for very tight lines you can stick some paper to the edge a bondo squeegie, good for places like the body line on a 32 ford ,

[rtsecharger]

You guys should try the Soft-Sanders. They are excellent!! They come in different shapes that actually contour to what ever you are working on.
they also come in different lengths. They are soft which i didnt think would work but, I was wrong!!! They will flex either convex or concave while you are working with them and the paper dosnt come off You can make them stiffer by applying tape to the side you are not working with.
You can also use them when wet sanding and their superflex sandpaper actually stays stuck to the sander!! never had anything like that. Durablocks are great but these things in my opinnion puts them to shame!! Really cool stuff!! got mine at softsanders.com
with these you dont have to wasted alot of time making your own sanders of plexiglass and stuff.

[tech69]

I like the side of the palm of my hand sometimes. The area below my pinky. Works great for certain areas. I even spread filler sometime with my fingers, acid brushes, and even razor blades. Sometimes I'll sand with paint sticks, the cardboard center of da paper rolls, modified paint sticks, and modified dura blocks. Whatever it takes as long as it's not digging when sanding and not spreading my filler like crap.