To save people clicking, here's the model in question:
There are (at least) two ways to construct this in Great Stella or Stella4D:
(1) It's a stellation of the dodecadodecahedron
, shown below:
So load that model, switch to the stellation view, and hit the Up arrow until you see the model you want (25 times to be precise!). Now look at the net view and the netw required to build it will appear, ready for printing.
(2) If you didn't know what it was a stellation of, you could still make this in Stella. Looking at it, it appears to be a compound of a small stellated dodecahedron
and a great stellated dodecahedron
, ie these two:
You can add them together easily enough in Stella, but how to get the relative scales to match? Well, it appears they have been scaled so that their edges bisect each other, so you need to scale them so that their edges are the same distance from the centre of the model. This is known as the midradius, for uniform polyhedra.
So load the small stellated dodecahedron, and set its midradius to some known distance, say 10, using "Scale->Midradius / Reciprocation Radius". Put this in a memory slot ("Edit->Put in Memory->Memory 1" or just type "m1").
Now load a great stellated dodecahedron, and set its scale the same way (set midradius to 10). Now add it to the model in memory with "Edit->Add/Blend from Memory" and voila! At first it may be all one colour, because the colour was retained from when it was put in memory. Ask Stella to do it's auto-colouring by reselecting "Color->Basic Color Scheme->Auto Color". A quick way to do this is to hit Tab twice. Once switches to single colour mode, and again switches back to auto-colour. Now you're ready to print nets.
Finally, if a model doesn't have a single midradius, that is edges are not all the same distance from the centre, you can still resize it based on the distance of one particular edge from the centre. Go to Measurement Mode and Shift+Left-click on the edge of interest, then click the dot-in-a-circle button that appears at the top-right of each view when in this mode. This will measure the distance from the edge to the centre of the model. To set this to another length, use "Scale->Measured Distance".
Hope all that made sense!