Dual CoreXY setup that uses LME12UU and 12mm shafts

thingiverse

It appears that you've created a set of 3D printed parts for a dual hotend setup, which seems to be designed for a RepRap or DIY 3D printer project. Here's a summary of the updates and features you've mentioned: 1. Initial design and testing: You've tried various fan duct designs but eventually settled on one that worked well. 2. Update (12/2/2015): You added an end stop magnet and hall effect holder for the Y axis, modified the fan ducts, and realized the importance of aligning the fans correctly. 3. Update (1/10/2016): You had a brilliant idea to simplify the process of aligning the hotends by modifying the clamp design to provide 2mm wiggle room. 4. Add-on features: You plan to add a cable/boden holder and a Z-probe to the setup. 5. Single head version: You're working on a single head version of the setup, which will have different X and Y carriages. 6. 8mm version: You'll be creating an 8mm version of both the dual and single head versions. The most recent update (3/19/2017) mentions: 1. Version 8 of the Dual Hotend: * Switched to physical switches instead of hall effect sensors. * Added a BLTouch version. * Added an inductive probe version with a lock screw. * New option for the upper motor mounts, which now hold a bearing to stabilize the top of the 12mm ball screw. The next update (3/26/2017) mentions: 1. Fixed belt mounts being too loose in one corner. 2. Finished the fan shroud, which holds 2 30mm fans for hotend cooling and 2 40mm fans for part cooling. 3. Modified the inductive probe version to use a clamp instead of a setscrew. It seems like you're continuously improving and refining your design based on feedback and new ideas. You've also been kind enough to acknowledge the contributions of other makers, such as Saldot, who created a fan holder/mount that inspired your fan shroud design. Overall, it's clear that you've put a lot of thought and effort into creating a robust and functional dual hotend setup for 3D printing.