Helicoid 2

thingiverse

This model depicts a portion of a helicoid, defined by parametric equations x(t)=u.Cos(t), y(t)=u.Sin(t), and z(t) = 2t/3. The parameter u ranges from 0.25 to 1.25, while the parameter t spans from 0 to 2Pi. Both .stl and .form files used for printing are provided. Additional information is available at http://mathvis.academic.wlu.edu/2015/07/27/helicoids/.