Features: 1) CNC hollowed out full metal shell, high-quality accessories, high precision, good strength, not easy to deform, high temperature resistance 2) Hollow shell bracket design, design, light weight, less inertia 3) CNC POM gear, reduction gear design, high transmission ratio, to achieve greater extrusion torque 4) High-quality hard steel nano-coated gears, wear-resistant, good precision and 5) Moons 36 motor with 8 teeth, good thermal control ability, low heat generation and large torque. There is a PTFE tube metal joint at one end, which can be adapted to more models at a short distance 1. Name: CNC Metal Mini Extruder 2. Applicable models: VORON, -10, CR10S, -10 4S, -10 5S, -10 MINI, -20, -2, , PRO, V2 , Gasherbrum K3. It will fit almost all FDM 3D printers if you can design the mounting bracket. 3. Processing technology: CNC Print model download link: https://.thingiverse.com/thing:4974509 Note: It is necessary to modify the E-axis step value of the extruder, for example: the E-axis step value of Ender3 is 870. 1) The maximum driving current of the extruder is 1A, and it is recommended to use it at about 0.8A, which will not cause excessive heat The reason for adjusting the current: to obtain a more suitable torque to prevent the motor from overheating 2) firmware modifies the extruder pulse (8 teeth 36 motor settings) 1: Modify the extruder pulse by firmware: #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 870 } 2: Send G code (can be sent by slicing software ): M92 E870 M500 3) 10-tooth 36 motor pulse value: 691 4) Klipper firmware modifies the rotation_distance value Material: Aviation aluminum colour: As shown PackageContents: 1 x Mini Extruder 1 x Accessory package Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.