Ender 3 Cooling

I made this in an attempt to address some issues I had with the stock cooling setup on the Creality Ender-3. The 40mm axial fan that cools the hot end dumps a lot of air out the bottom of the metal box, which was causing some issues for me when printing PETG on this printer. All that airflow hitting the bed and print was lifting the first layers, much like trying to print PETG with the cooling fan on high for the first few layers. ;) I wanted a duct for that fan that snaps onto the heatsink to funnel air through it and keep it off the bed, much like the ones used on E3D style hot ends. I made that duct, then needed a way to attach the radial fan for parts cooling. I didn't like trying to hang it off the right side like stock, since the wires run down there to to the block, which means you'll need a cutout in the fan mount, leaving it somewhat weak and fragile. So I moved the fan to the left side, mounting it to the carrier plate using the two screws that held the metal box.

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