Clean the hot-end and nozzle of your 3D printer with Dyna-Purge 3D Clean. Dyna-Purge 3D Clean is a non-chemical, non-abrasive, thermoplastic cleaning compound that is safe for both operators and 3D printers. Available in 2.85mm diameter Dyna-Purge 3D Clean is specially developed by 3D-Fuel for 3D printers and is ready to use. Packaging Information : 35 sticks (2.85mm) of Dyna-Purge 3D Clean plastic filament comes in a tube with a desiccant package to keep moisture away.