RepRapPro extruder drive. NEMA14.

thingiverse

This is a revised extruder drive that utilizes a NEMA14 stepper motor instead of the original NEMA17 design used in the mini extruder. Since my existing Huxley printer employs NEMA14 motors, this adaptation seems necessary for me. The previous RepRapPro extruder design intended for Huxley utilized a NEMA14 stepper, albeit with a distinct gear ratio compared to the present version. My setup has undergone testing on this machine for approximately six months without encountering any major issues. Key changes in this revised model include: - Adjusting the extruder's size to accommodate the NEMA14 motor. - Introducing an additional slot for mounting a nut. - Changing the tension nut's placement and adjusting it for easier manipulation. - Overhauling the source code related to spacers and modifying the filament drive bracket design, now available as a customizable accessory. Noteworthy alterations also affect parts such as the large gear shaft and Bowden tube adjustment mechanisms. Details about these adjustments can be found in the modified source files. Printed components used for this project are standard parts taken from my existing 3D printer: - Small gear - Large gear - Filament tongue In terms of hardware, required items include: Parts derived directly from original sources without changes to fit existing equipment and meet convenience considerations: 623 bearing: Utilize 3 of these. Hex head screw M3 x 25 mm length for large gear usage. One used per large gear piece assembly. M3 x 16 screws x four pieces used to mount motor safely into extruder body. A smaller version of this same bolt type M3 x 12 is utilized with a single nut (small washer or M2/3 flat washer might be better in place) placed directly upon main gear for additional stability of filament flow by placing the tension bearing within it and onto extruder axis, hence giving extra space to fine tune Bowden setup which now should run very smoothly thanks. For more secure setup tighten bolts on all these nuts tightly as possible then use some washers when tightening further because there will still need tightness. For proper functioning ensure spacers between 2mm thick - stepper motor shaft length based requirements apply. Spacer choice should be guided by desired extruder motor type which I am currently utilizing the stepper with following: SY35ST36-1004A and measuring from the very front of the driver it is a solid 21mm in height so use two spacer units. Motor selection is restricted if less than this due to design limitations hence non suitable alternatives do exist however would have made adjustments then to match needs anyway. Refer building guide given at RepRapPro web-site as original steps hold exactly for updated project since there are virtually identical - just more advanced parts utilized and spacers needed but those are also easily located with basic 3d printing abilities if need be although in this scenario I am utilizing components found already inside box of existing Huxley assembly which makes a world difference to me as having spare materials is nice. Now lets mention about some really important facts that should come up here since there has been great experience sharing all over last couple years. In all honestly speaking many thanks indeed do go out there for making available those awesome prints RepRapPro you are helping others out in creating functional products such as myself who wish utilize 3d printer at home too with good pleasure. As matter of fact I already utilized quite number of things designed by them over time but not everything was useful which led me searching everywhere else because either broken somehow got wasted then never could afford cost needed sometimes really upsetting situation... Now its hard for people trying get what need want use same stuff everyday however even though you may disagree completely sure that future generations wont find ways out thanks all who tried earlier years keep doing fantastic work!!