These are models of the conical hail stones that fell November 24, 2012 in the Fingerlakes. They were entered into a CAD system so they could be tested in an updraft wind tunnel for terminal velocity. They are very close to actual size.
Snow is only good with a compression load. Igloos must therefore be made from an inverted catenary curve shape to be strong. This is a small example of the correct shape, but with thinner than useful walls to save cost. 'White Strong & Flexible' looks so much like snow when printed it seems first nature to make snow sculptures with it.
Andy's models is a collection of computer generated models. Most are not made in a CAD system, but are instead the output of a computer program. In the past they could only be viewed on a screen. Now with the magic of 3D printing the actual object can be produced. I'm so delighted to be able to turn the designs into a physical objects!