Coal-based, acid-washed carbon for firing BRONZclay metal clay designs. Coal carbons create a patina on clay pieces as they are fired. To reuse the carbon, avoid letting air reach it until it is cool. Use with stainless steel firing pan.
It is recommended to wear a mask when working with coal carbons.
Firing Pans>Blacks>H20-4573BSTools>Jewelers Tools>Firing PansBlackshttp://www.firemountaingems.com/itemdetails/h204573bsH204573BSCarbon coal, activated coal-based, black. Sold per 5-pound pkg.//image1.fmgstatic.com/images/p4573bsb.jpg69.5069.50As Low As $8.08 per pound