Dave's 30mm E3Dv6 fan intake duct

thingiverse

This mounting block is specifically designed for use on the intake side of a 30mm cooling fan that comes pre-installed with an E3Dv6 hotend. It acts as a protective grill while providing a duct to minimize airflow around the print bed. For the exhaust side, this design might not be ideal due to the shape of the components. You can use my OpenSCAD script to make changes to this design based on your requirements. It gives you options for changing screw hole size, adjusting duct height, altering standoff height, setting diameter and height for the standoffs, plus adjusting grill plate thickness, all while offering room for customization. This component is made with 25mm screws and using 2.5mm high standoffs creates perfect space between components, but in the case of my particular build it made use with Thing #455071 ideal as 10 mm length of screw passed from grill to other part of holder (including washers), resulting almost in the precise setting. Follow these steps for proper usage: Adjust OpenSCAD file parameters, compile it, and export STL. If pairing it up with Things #455071 and M3 screws you may probably find yourself just sticking with provided stl file which worked fine when used together with aforementioned components after using an M4 threaded fastener in ABS printing and I would have recommended PLA but then your system must handle higher temperature as 0.2mm layer thickness was a choice here to add extra robustness as the part also gets infilled at 50%, and that should also do justice