CLEAN YOUR 3D PRINTER with 3D Clean (Dyna Purge), a non-chemical, non-abrasive thermoplastic compound that's safe for both the operator and the printer. FOR HOTEND CLOGS & MAINTENANCE: 3D Clean does the heavy lifting by cleaning that pesky clogged printer nozzle and performing routine maintenance (recommended minimum every 3 months or 0.5kg of material, whichever comes first).