Active Cooling Fan Duct v2 for Replicator 1 / Duplicator 4 / FlashForge / CTC

thingiverse

The text appears to be a set of instructions for printing the ActiveDuctV2.0 with an FDM 3D printer, specifically designed for printing ABS filament. Here are some key points mentioned in the text: **Design Requirements** * The duct has very fine walls and long bridging parts, so tuning the slicer profile is crucial. * It's designed for a common 0.4mm nozzle with a layer height of 0.1mm. **Warping Issues** * Warping can be caused by a non-flat bed, mis-matched extruder temperature, bad filament quality, or using the wrong build plate material. * Using a real flat aluminum build plate and a 1mm FR-4 fiber board attached with small metal clips is recommended for ABS prints. **Slicer Profile Tuning** * Use a simple test cube to tune the extruder temperature, shells, filament diameter, infill to shell overlap, and bridging settings. * Adjust the extruder temperature to the lowest setting where the filament flows continuously. * Configure the profile to create 2 shells and optimize the filament diameter for binding. * Tune the infill to shell overlap by printing a test cube with 100% infill and adjusting the overlap value. **Bridging Optimization** * Use active cooling by printing a temporary duct or a real one, and turn the extruder fans to blow onto the duct. * Configure the printing speed for bridging to achieve good bridges. * Print a good bridging test model from Thingiverse to optimize bridging settings. **Nozzle Calibration** * Use a 36mm calibration tool to calibrate both nozzles to the same height, leaving enough space between the hot-end and the duct. * This ensures that the duct doesn't melt during printing, especially with ABS filament. **Printing the Duct** * Print the following files: ActiveDuctV2.0, ActiveDuctV2.0_Clip (x2). The text also includes a few warnings and advice: * Be careful when removing the duct from the printer. * Install a pluggable connection near the duct for easy removal during high-temperature prints. * Fine-tune your slicer knowledge and/or buy better filament if you experience problems printing the duct.