For the metal etch recipe, visit: blog.smart-crew.com/2010/01/26/smart-labs-metal-etch-test-2008--the-recipe.aspx

WARNING: DO NOT ATTEMPT TO USE THIS INDOORS (unless extremely well ventilated.) The fumes created here are TOXIC. Wear a respirator, gloves and goggles when handling this hazardous chemical mixture. If used property, this can lead to an endless possibility of beautiful ART projects. DO NOT USE THIS FOR VANDALISM

Thanks!
S.M.A.R.T. Lab Staff

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