<p>What will a Goldsmith use Needle File in Mysore for? A Needle file is a design and crafting tool used to work on small pieces of material like in jewellery making, masonry, engraving, metal working, wood working, etc, to name a few. They are used more as finishing tools and in fine-works. &nbsp;The Needle file is made of hard steel with number of serrated surfaces with an appropriate handle. These serrated surfaces are called teeth. The Needle files can be segregated based upon the number of teeth, the size and shape of the tool.</p>