Laser Engraving Powder: OMTech's laser marking powder for CO2 laser engravers lets you mark on metal with ease. Simply add 99% alcohol to the pre-marked lines, shake well to thoroughly mix the agent, and you will get your 4.1 fl. oz. of spray Metal Marking Made Easy: Our laser marking fluid works with most metals including aluminum, stainless steel, brass, and many others, letting you personalize jewelry, customize tumblers, serialize tools, and much more Dry in Under 5 Minutes: The cadmium-free metal marking ink dries in under 5 minutes, or in only 2 minutes with a hot air blower, ensuring hassle-free and efficient operation even for batch production High Contrast Results: This laser ink agent's innovative formula allows creation of high contrast, permanent black designs on bare metals with your 25W and above CO2 laser engraver, or more vivid designs with your fiber laser Rinse Off with Ease: Once your marking is complete, the unmarked excess spray can be washed off your item with a simple rinse, so you can enjoy and start selling your fresh and unique design right away This product needs to be dissolved in alcohol. The product packaging does not include alcohol. Please prepare your own alcohol solution with a concentration greater than 90%. Mark metal using your CO2 laser engraver with the help of OMTech's laser marking powder! Simply add 99% alcohol to the recommended lines and shake well to thoroughly mix the agent to get 4.1 fl. oz. of spray! This innovative black laser spray allows your CO2 laser engraving machine to create dark high contrast designs on most common metals, including aluminum, stainless steel, brass, nickel plating, and more. Customize your jewelry, serialize your hardware, design your own tumblers, and more with our versatile laser agent thanks to its powerful spray, fast drying quality, and easily washable consistency. Apply the agent evenly across your substrate, wait for 5 minutes or use a hot air blower for even faster drying, and engrave your design as normal. After it’s done, just rinse off the excess laser ink around your design and you have a beautifully vivid black marking on your growler, pet tag, or any other bare metal medium! Expand your CO2 machine capabilities with OMTech’s metal laser marking powder and let your great new business ideas soar!