Use this diamond file set to file metal. Very fine diamond abrasive. This carving and sanding file is excellent for use with metal clay green-ware.
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Product: Diamond Needle File Set of 10 - Fine
"If you use metal clay you must get these
Name: Southern Horse
Review: At first I thought these were too small and fidgety to be useful. Boy, was I wrong. These files are great and a must if you are using metal clay. Make sure you get a file brush at the same time so you can keep the files clean.