Compact extruder for Prusa i3 and 42YF22GN050R (2engineers) geared motor with shaft support

thingiverse

This gadget is a modified take on http://www.thingiverse.com/thing:69342 with more features and options added.\nIt's essentially a plug-in replacement for Greg's Wade geared extruder found at http://www.thingiverse.com/thing:18379 that I have implemented on my Prusa i3.\nFilament Diameter - 1.75 mm. Components List Machined Parts: Geared Motor-42YF22GN050R Drive Gear-MK7 Bearing-Assistance - 3 x 624zz bearings (2 are mounted to the bed, 1 as an idler) Fasteners-Washers 6 x M4 Socket Head Screws-Socket 5 x M4x20. Socket Screw Nut 5 x M4. Fasteners-Bearings Support 2 x M3x16 socket head screws Socket Nut Fastener-Bearing - M4 nut 3, M3 nut 4 and Washer (2 x) M3 (2 on Motor Mounts 1 fastens bearings and has no nut. For bearing mount is use 3 X M4x16). Spring- (from weapons supply as the part from pistol) springs- weapon shop acquired parts spring of pistol) Springs-Spring is in a weapons store, a type obtained by pistol. Gear Coupling-Diameter Short length short pftf tube - e3d - hotend Motor Settings micro step - setting on firmware: Steps/Meter - 8 settings- default setting on extruder Retraction length of Filament .5 mm in Marlin software and speed of retracting at (30.00) meter/sec Motor Parameters Setting the following parameters for the Motor: #define DEFAULT_AXIS_STEPS_PER_UNIT 100.567. #define DEFAULT_MAX_FEEDRATE .035 #define DEFAULT_MAX_ACCELERATION .03. # Define DEFAULT_RETRACT_ACCELERATION default Retract at max rate speed is to have max at -3.0 units. updated september13th14