Drews Planetary Geared Extruder Free 3D print model

cgtrader

It seems that you have a detailed manual for assembling an extruder unit for a 3D printer. Here is a rewritten version with proper headings and some reorganization of the text: **Assembling the Extruder** ### Ring Gear Assembly The ring gear assembly consists of two parts: the ring gear and the carrier piece. The ring gear has to be made in two pieces due to its large size, which makes it difficult to assemble. * Screw three shoulder screws into the bottom side of the carrier. * Tighten them well using locktite to prevent any movement. ### Planet Gears The planet gears are located around the sun and held by the three cut-off bolts on the carrier. Make sure that the planet gears do not touch the motor shaft. ### Assembling the Ring Gear Assemble the ring gear halves, making sure they line up properly. The alignment marks should be in place for a perfect fit. Use locktite to secure the 4-40 screws. ### Axle Assembly * Remove the flange from the axle piece after printing. * Press the 1614RS bearing into the armpiece. * Cut out any support material from the arm pocket and secure it in place with a 1/4 shoulder screw. ### Body Assembly * Drill out the filament path thru passage with a 4mm drill. * Insert two pieces of bowden tube, one at .3 long and another at least 1.5 long, to guide the filament through the extruder block. ### Final Assembly * Use a socket head driver to screw the push-fit connector into the bottom of the Body piece. * Press in two 625 bearings into the Body part, placing the MK7 drive gear between them. * Lower the body assembly over the M5 bolt and secure it with four 6-32 flathead screws. Turn an M5 hex nut over the exposed end and tighten the set screw on the MK7 drive gear. **Additional Tips** The motor will get mildly warm at most, and the stepper motor driver should not overheat during use. However, long-term reliability of the printed gears remains to be tested.