Wanhao duplicator i3 extruder assembly reference
thingiverse
Here are some quick and dirty Solidworks designs for the lower extruder component assembly. These should enable you to create your own fan shroud using existing geometry without any problems. Note that this is a work in progress and may differ slightly from your actual extruder assembly, depending on heat block location and orientation. Adjustments can be made within the assembly file to suit your setup. Please let me know if there's anything I need to change. Feel free to enhance these designs by adding any necessary details as required.
With this file you will be able to print Wanhao duplicator i3 extruder assembly reference with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Wanhao duplicator i3 extruder assembly reference.