Extruder for Prusa MK3 with E3D Revo Micro and Orbiter 2.0
prusaprinters
<p>This is my new extruder for <a href="https://www.amazon.com/3D-Printer-Prusa/s?k=3D+Printer+Prusa&linkCode=ll2&tag=thingiverse09-20&linkId=28c787aef7c5a20cf2004b821dd161bf&language=en_US&ref_=as_li_ss_tl">Prusa</a> MK3 featuring E3D's Revo Micro and the new Orbiter 2.0.<br>For download I added the complete assembly in step-format. Free to further develop these data. For printing I added amf-files.<br>The Orbiter needs different settings which are all described in the documents coming with the Orbiter. You'll need to adapt the Orbiter cable plug as shown. I took a spare Einsy cable, cut off the plug with some 50mm cable rest, attached (soldered) 5x0.6mm wire to the ends and shrinked the connection.<br>I used a 25x25x6mm hotend-fan with a 3-wire lead which prevents problems with the <a href="https://www.amazon.com/3D-Printer-Prusa/s?k=3D+Printer+Prusa&linkCode=ll2&tag=thingiverse09-20&linkId=28c787aef7c5a20cf2004b821dd161bf&language=en_US&ref_=as_li_ss_tl">Prusa</a> firmware. It's a SUNON KD0502PEB1-8 which is quite hard to come by. <strong>Update:</strong> 1. KD0502PEB<strong>2</strong>-8 (25x25x6.8mm) can be used as replacement. The airflow is a little bit less but it does the job without problems. 2. I did an update on the Pinda attachment using 2 M2.5 screws. If anyone is interested please ask. (<strong>endUpdate</strong>) E3D ships a 2-wire hotend-fan (20x20x10mm) with the Revo Micro hotend. For anyone looking for another fan: The hotend-fan needs a airflow volume of 1.9 CFM.<br>For the 3 main structural parts (x-carriage/x-carriage-back/adapter RM-Orbiter 2.0) I used <a href="https://www.amazon.com/colorFabb-90-285-113-Filament-Diameter-Black/dp/B01I4VZXNK?dchild=1&keywords=colorFabb&qid=1618263217&sr=8-3&linkCode=ll1&tag=thingiverse09-20&linkId=1ee3dc99cc4c4e6ea97eb2d25ece1b71&language=en_US&ref_=as_li_ss_tl">ColorFabb</a> PA-CF because you need optimal stiffness here. For the M12x1.5 thread in the Orbiter/Revo Micro-adapter it's advisable (at least for PA-CF) to use a cylindrical speed modifier area (PrusaSlicer) around the thread to reduce the speed locally to 12 mm/s. Layer height for PA-CF: 0.2mm/0.4mm nozzle(X).<br>Other filaments: Extrudr GreenTEC PRO (print fan shroud, hotend fan holder, Pinda mount), PLA (remaining 2 parts).<br>2 parts with 0.25 nozzle/0.1mm layer height: hotend fan holder, Pinda mount. Remaining parts with 0.4mm nozzle/0.15mm layer height . Supports only for print fan shroud (3 air exits) and hotend fan holder (arc).<br>Tip: Plastic is not metal. Don't overtighten your screws and regularly check and fasten them if necessary. Best check before every print session. <br>If anyone needs more information please ask me.</p>
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