polishing

So they set to work in one of the big yellow rooms of the castle and worked for three days and four nights, hammering and twisting and bending and soldering and polishing and pounding at the legs and body and head of the Tin Woodman, until at last he was straightened out into his old form, and his joints worked as well as ever.

As he stood in front of us now, he held a piece of chamois leather in his right hand with which he was polishing a coin.