Test tube hyperboloid vase

Test tube hyperboloid vase

This is holder to arrange test tubes in a hyperboloid and hold flowers in a pretty pattern.
There are four versions: for 10 or 12 tubes and for 16mm and for 19mm tubes.

The test tubes need to be held snug, you might have to scale the model up or down 1-2% depending on the specific tubes and filament properties.