Lulzbot Mini Double Cooling Duct

thingiverse

This is a set of instructions for assembling and installing a custom duct system on a Lulzbot Mini 3D printer. The duct system aims to improve airflow and prevent overheating during printing. Here's a step-by-step guide based on the provided text: **Step 1: Assembling the Duct** * Add acetone glue/superglue to the top surface of the blower holder. * Using a flat surface, press the blower holder onto the bottom of the duct assembly. Ensure the direction of the fillet in the ductway is correct. * Attach the left and right ducts to the downtube using a flat surface for alignment. **Step 2: Attaching Faceplate** * Apply acetone glue/superglue to the faceplate and attach it to the front of the assembly. * Ensure the orientation of the inner parts of the O and B inserts is correct. * Apply cover pieces to the front of the assembly. **Step 3: Removing Old Duct** * Remove the old fan and duct using steps in reverse order from the official OHAI manual. * Do not throw away screws, as they will be needed later. **Step 4: Installing New Duct** * Slide the mount onto the print head. * Use tapered screws to attach the new duct assembly. * Reattach the limit switch using M2 SHCS. **Step 5: Testing the System** * Insert the blower motor into the top of the blower motor holder. * Cut wires from the old cooling fan and solder them to the new blower wires, ensuring correct polarity. * Add insulation to isolate newly soldered wires to prevent shorts. **Step 6: Final Test** * Run a test print with your finger on the power switch and carefully watch clearances while the nozzle is wiping and during bed leveling.