im not a sword polisher,and what I ment was clean a small area with a super fine uchagamori powder nugui.my sword teacher said it was ok as long as I don't start removing any metal...so fine that it just removes dirt so to speak...I respect these objects and my motto is first do no harm.....and thank you for the info it is very helpful....my teacher is going to do the tsukamaki,and wen I can afford ill have it polished by a good polisher.....its a long wakazashi 21 inch cutting edge,and has a very nice shape to it