Combined Ender3 Direct Drive, Fan duct, and BL Touch mount

thingiverse

This a remix of a few items to make an all in one solution for the hotend on Creality Ender 3 and similar. This item gives you Direct Drive, a BL Touch Mount with thickened area to eliminate the springs, and a built in fan duct system in one piece. It will need supports, as it is a fairly complex part. The outer channel has small holes for zip ties to make cable management at the hotend a breeze. I printed in 3DFuel's Daffodill Yellow Standard PLA. Edit 1: I decided to print in the verticle orientation...with the base of the cooloing duct on the build plate. I used Conical supports, Everywhere, and a support blocker through the cooling duct part. Updates and pics as progress is made... Edit 2: printed and installed. See pics for closeup of how wiring lays in my setup. Notes...Print with face of front fan grill on bed. Use support block in part cooling duct and hole for wire for BL Touch mount. I used conical supports with CHEP's Cura 4.5 Beta profile at .2mm Layer height. 5% infill in grid pattern. Front fan...model chosen was for 50mm? so stock fan is a loose fit. There are currently no holes for fan mount. I just used a dab of CA glue on the bottom ledge and centered the fan on it. Not super secure, but it isn't going anywhere. I'll work on that. The part cooling fan holes are JUST right for the stock screws...DO NOT OVER-TIGHTEN...gentle gentle. there isn't much plastic there for threads. Make sure to wait until you have all parts installed and tightened down before zip tieing cables in...gives you wiggle room for fiddly bits like the BL and for positioning. Make sure to use at least the top 2 ties to avoid excessive movement on cables at Emotor. DO NOT PRINT!!! working on V2 right now, as I have discovered a flaw that will make the finished part quite flimsy and useless. Redesigning to eliminate and reduce need for supports. V2 posted. Made some changes to make for less supports and to strengthen a weak point. Print with 4 walls and 5-10% infill. Still need support blocker in cooling duct