Cleaning Tool Drill Bit 0.4mm Size for Extruder

Specifications: Product Type: Nozzle Cleaning Drill Bit. Drill Bit Diameter: 0.4mm. Shank Diameter: 3.175mm. Material: Hardened Tungsten Carbide Alloy. Compatible Nozzle Sizes: 0.4mm and larger. Compatible Printers: Suitable for most FDM/FFF 3D printers. Application: Cleaning clogged extruder nozzles and hot ends. Operation: Manual use only (not suitable for powered drills). Colour: Metallic finish. Reusable: Yes, with proper handling and cleaning after use.   How to use: The nozzle you want to clean should be heated to the recommended printing temperature. As directed by the manufacturer of your printer, unload any existing filament. The heated nozzle should be gently removed from the heat block while it is still at printing temperature. With caution not to enlarge the nozzle hole, carefully insert the drill bit into the nozzle by hand, working from the inside out (following the filament's course). Re-heat the heat block to operating temperature after clearing any obstructions, then refit the nozzle (avoid overtightening). Before printing, level your print bed again.   Remember these usage tips: A 3D printer's nozzle should never be taken out of the machine before it has reached its maximum operational temperature. The drill bit should not be fastened to any power instrument. Because the drill bits are comprised of hardened tungsten alloy, use caution when applying excessive force. To remove built-up plastic, immerse the cooled drill bit in a solvent after usage.