As a sidebar--
Jim, I saw your previous post and your mention about the cotton swabs. I wanted to add a caution: If you're going to use them with any kind of solvents, like acetone, I'd recommend getting the equally cheap generic swabs with the rolled paper shafts. Acetone might start to soften and dissolve plastic ones, while you're working with them.
Of course, you can be like me, and dip a swab right into the can of acetone, and let it drop by mistake. So now, my can of acetone has been diluted slightly by cotton and rolled paper, D'OH!