You can make one from a .38 swab, if you want to. It won't be perfect, and you won't fool a jet collector with it. But if you're making it to use, you can do a pretty passable job.
Chuck the .38 swab in an electric drill (1/4" runs faster). Then clamp the handle in your vise. Sharpen a wood chisel to an unnaturally sharp edge. Then just turn it down as you would a dowel rod. Its a little messy as it tosses cotton dust around, but it cleans up pretty easily.