The Scorpio: Dual Blower Fanduct + SG90 Servo for Tevo Tarantula

thingiverse

UPDATE: Latest version available here: https://www.thingiverse.com/thing:2744300 This design brings together two top-notch designs to create a single, highly functional unit: the Dual Blower fan duct at https://www.thingiverse.com/thing:1850163 and the servo bracket at https://www.thingiverse.com/thing:930292. Printing can be challenging, but I'm working on modifying the design to make it easier to print in the future. For now, custom supports are highly recommended, and printing upside down with good adhesion is a good idea. If you don't have access to custom supports, try printing it lying flat on the 'box' with supports from the build plate - be prepared for some extensive cleanup as there will likely be a lot of bridging. The main body can be printed at 0.2mm layer height and medium infill, while the arm and gear should be printed at around 0.1mm layer height without brim and solid. This project was inspired by https://www.thingiverse.com/thing:1632848, and you can follow those instructions to set up this project as well. UPDATE: I've made a design change that shifts the arm to the left for better airflow towards the hotend. I also added an arm designed specifically for use with large Microswitches - I highly recommend using a Honeywell V7 5F17D8 1796593, which boasts an incredibly low activation force of just 0.15N. This minimizes pressure on the bed and ensures high accuracy. You can find this product on eBay at http://www.ebay.co.uk/itm/351388088028?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT. I've also made the design compatible with the interchangeable dual blower fan duct found here: https://www.thingiverse.com/thing:2346783, which offers greater flexibility when choosing ducts. I'm still working on designing ducts that work well with the hotend's wires rotated to face forward - you can find these in the link. Check out a video of this design in action at https://youtu.be/P5GlPdGeo0M.