+1. These scratch pens are great for removing rust and paint fast while having control in small spots and areas and they come in different diameter tips for small to large areas. I've used these on small chips where you can just twist the pen and confine the scratching to an area the same size as the chip and just add a dab of paint to fill it in. I'll add that when using this wear some latex or nitrile gloves as the super thin glass strands break off during use and get imbedded in your skin and near impossible to find and remove until your skin sheds them. Also, use some kind of cover over your work area to catch the broken strands as they will end up stuck in bare feet eventually.......IME.