if we create imppler or turbine balde that time we need x,y,z,r,θ,Ø.it is very difficult do in inventor.so we need spherical & polar co ordinate
&
3D skecth we can't link the parmeters to Excel file. like 2D sketch parameters.
only we can import the all the points in a time. in future if we want edit the dimensions it is not possible.
thanks
regards,
ram