: Wipe the dust off with a dry clean Wipe It Off
before switching to the 100 side of 100/180 grit buffer, repeat all filing steps to remove scratches left by the previous files. Turn the buffer over and buff with the 180 grit side and remove the dust again. Using the 220/280 buffer, use the 220 side to buff the surface, repeat then switch to the 280 side and repeat. Wipe the nail with a dry clean Wipe It Off
to remove dust.