My Customized Parametric Golden Spiral Fan Duct v0.1

thingiverse

This custom model was generated using a Thingiverse app and the design file with the ID 236144. To build this design, use the following parameters: 5 fins, a Golden Ratio of 0.618034, a roundness factor ($fn) of 24, a ball radius of 5mm, a screw placement distance of 32 units, layer height of .5mm, scaling by 10, screw diameter of 2.8mm, wall thickness of 1.5mm, perimeter extrusion width of .5mm, duct height of 10mm, fan diameter of 38mm, ball inset depth of .8mm, corner rounding of 6mm, mount placement height of 4 units above the main object surface with a mounting side dimension of 40 units, and all mounts placed on the negative side of the base surface.