Jewelry repair manufacture, hobby crafts, metal sculpture, glass blowing, plumbing, electronics repair the little torch has unmatched flexibility - it can be used with several fuels including acetylene, hydrogen, propane, propylene or natural gas. It produces perfectly controlled, completely stable flame hot enough to melt commercially weld able metals, glass and even ceramics. It may also be used with special heating tips to melt up to 3 oz. of gold or silver.