Ender 3 Direct Drive hotend with autolevel

thingiverse

If you have any questions or need clarification, don't hesitate to comment. This is a simple modification that changes around the hotend configuration of the Ender 3 or any printer using the same hotend mount. The 40mm hotend fan is replaced with a 30mm fan and the metal housing is replaced with a printed duct. Accessibility is increased around the hotend, and provisions are made for auto bed leveling with a servo and micro switch or a BLtouch. The bowden tube is removed and replaced with a direct drive setup. Most of the original fasteners are reused, and the modification only needs a few extra M3 screws to complete. Mounts for johnniewhiskey's cable chain are used for cable management. Parts Used: Triangle Labs 3D Touch Triangle Labs Titan Extruder with Pancake Stepper Triangle Labs All Metal Hotend for the CR10 with Titanium Heat-Break 30mm 24v Fan 2 M3x6mm Screw 2 M3x8mm Screw 4 M3x16mm Screw (if using the servo version, 2 more are required) 2 M3x20mm Socket Head Cap Screw 2 M3x3mm Countersunk Screw 20 Links of Chain for Cable Management The total cost of parts is about $65 to $75. Software Changes Needed: Increasing the steps/mm (mine is 398) and changing the routing of the wires. Setting up auto bed leveling with either a servo or BLtouch Parts Needed if Adding a Servo for Auto Bed Leveling: 9 Gram Servo Micro Switch For the micro switch servo arm, use: http://www.thingiverse.com/thing:3293821 on SG90 type servos or https://www.thingiverse.com/thing:3731273 for HS65 servos (as pictured).