someone use AIR ANGLE DIE GRINDER? It work good? and what is the best sand paper grit u can use with this tool? thank you http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=41655
they work great if you know how to handle it. i use 50 grit discs, which can be found at: www.fiberglasssupply.com, buy the 3" disc which goes with the sanding discs.,good luck