51x51x25mm blower fan holder and duct for Wanhao Duplicator i3

thingiverse

I wanted a more powerful fan on my Duplicator i3, but I didn't have any 51x51x15mm blower fans at home. However, I did have a 25mm thick one, so I designed this holder and duct to boost my performance. Bridge test used: http://www.thingiverse.com/thing:12925/#made Print Settings: Printer: Wanhao Duplicator i3 Rafts: Doesn't Matter Supports: No Infill: 0% on duct, 20ish% on holder Notes: The shell on the duct I set to 1mm and that causes weird behavior on the curved bits. Set it to 0% or your printer may struggle to infill the tiny space. Post-Printing: Screw the fan onto the mount with a long M4 screw, nuts, and washers. The holder is a bit loose, so you should be able to fit one washer between the inside of the holder and the fan. Attach the holder to the fan mount on the head using M3 screws, nuts, and washers. The mount can slide sideways. Flip up the fan and attach the duct; it should sit firm just by friction. If not, use glue, tape, or whatever works. If you have kapton in 5-10mm width, wrap the hot end a few turns to increase insulation. Flip down the fan, making sure it's not too low and won't interfere with your print. Everything should be reasonably firm once done.