Sanding using small erasor, First lots of oil then just a drop in sandpaper. Cutting eraser bevels getting into corneers. Bending eraser to fit shapes. Erasor only 1/4" thick easy to bend. one sixe 1x1 1/4", other 1x1". Good thing about avoiding edges. Importance of prepping wood. Few places sanded through, all due to tool marks. Sanding with 400 grit, used only 3x5cm for whole guitar. maybe use finer grit next time 600 or so.