Universal Dual Hotend

thingiverse

Remixed from a non-finished project. I took it over the finish line. This is a fixed dual head, no servos required. minimal hardware. Print the fan mounts with supports, touching build-plate. Back of it should be on the build plate. None of the other parts should require any supports. Print with your own preferences. Nozzle offset is 25mm - up to you to do this in the slicer, or firmware. I prefer the firmware. Fan connections on board, and how the firmware controls them is up to you and your board. My set up is unique, and I'm very familiar with remapping pins in the firmware. Recommended purchases: Bolts: https://www.amazon.com/dp/B09J2TYH25?psc=1&ref=ppx_yo2ov_dt_b_product_details Cooling fan: https://www.amazon.com/dp/B07C2S1MV4?psc=1&ref=ppx_yo2ov_dt_b_product_details Part cooler fans: https://www.amazon.com/dp/B08C7KGVDX?psc=1&ref=ppx_yo2ov_dt_b_product_details I used stock ender 3 hot ends, but something like a spider should fit if you want to put the money in to it. I believe I used 30mm bolts, but had to shave 2 mil off. Marlin supports this configuration, here are the lines you want to edit: ``` // This defines the number of extruders // :[0, 1, 2, 3, 4, 5, 6, 7, 8] #define EXTRUDERS 2 ``` ``` // For the other hotends it is their distance from the extruder 0 hotend. #define HOTEND_OFFSET_X { 0.0, 25.00 } // (mm) relative X-offset for each nozzle ```