About this 3D model

timelapse & instruction video; http://youtu.be/CvMu79ZCd9A a new Ultimaker2 feeder based on a combination of what I liked about the designs of |robert| and "Geeks" This design is influenced a lot by the designs off |robert| & "Geeks". Thanks for your great work !!! https://www.youmagine.com/designs/alternative-um2-feeder-version-two https://www.youmagine.com/designs/extruder-um2-version-2 And a big thanks to opensource Ultimaker for the published STEP files of the original feeder, that I could use to take the measurements from!! Please visit the UM forum for more background and instructions; http://umforum.ultimaker.com/index.php?/topic/4393-ultimaker2-feeder-system-improvements-and-ideas/page-28 if you want the design files of this thing go here; https://www.youmagine.com/designs/and-another-um2-feeder-design update; added a little knob for easier spring adjustment.. update; 2/7, as cor3ys already mentioned in the forum the arms holding the bearing are a bit to short (sorry, I only tested at low speeds...) updated the file. Version nr. 25 of the front and back arm have 2mm increased length.At the same time made a little change for easier installing the m3 x 50mm bolt...