Replacement tusks for (small model) elephant

For restoring a small antique wooden elephant, I designed these tusks with OpenScad. Note there is no ready made function for curved and tapered cylinders, but the program is not to complicated and fully parameterized. The original tusks, probably made from real ivory are long lost. The model is probably of an Sumatran elephant (https://en.wikipedia.org/wiki/Sumatran_elephant)

The used curve is a parabole segment, as it was easy to program and looks about right.

The tusks are printed in vase mode, meaning they are hollow and somewhat fragile. Normal printing mode did not result in a suitable smooth surface.