JOHN ROSENGRANT: The Spinosaurus is
in part a lot of
knowledge taken from having built the
T-Rexes in the previous two films.
Same process as always, it was done here. We started with sketches
then went into,
that's a fifth scale maquette that you're looking at now
which is awfully large it's almost seven feet long.
And
the difference being here
is instead of throwing hot clay up onto
an armature
that was built.
What we did was we took this maquette and had it rapid prototyped.
There they are walking with pieces of it.
It's still a massive undertaking because you can see
they're still huge and the level of detail isn't
one to one with the maquette so you have to go back and sculpt it into the foam.
But what it gives you is it cuts the whole process in half,
in time.
It needs to be
put together
in sections
which is quite an armaturing feat in itself.
But the material sculpts very quickly.
It's light, it can be moved around easily
and it's very true you can see the fifth scale maquette in front.
It gives you the right shape,
it gives you the form.
That area has been detailed and then the other areas above it haven't.
But it's a time saver and
it's more user friendly.
>>SHANE MAHAN: It still requires surface
sculpting,
but it's much more of a...
>>JOHN ROSENGRANT: Because also.
>>SHANE MAHAN: A hard foam.
>>JOHN ROSENGRANT: ...because it's so large
you can still go in and super detail on a level that you couldn't even with the fifth
scale.
So it gives you a direct match
but yet you can still embellish it further.
There you can see him carving in
even tiny details into the teeth. All the serrations on 'em.
Getting it ready for molding.
>>SHANE MAHAN: That's been coated with a type of paint.
>>JOHN ROSENGRANT: It helps seal up the foam.
>>SHANE MAHAN: With the porous texture of the foam.
>>JOHN ROSENGRANT: Any of the little gaps that connect it all has been filed with clay.
Then here is the mold making process which was
done with a high temp epoxy.
And that silver edging around there is how they break the mold down into halves.
They break it down into pieces.
And they're painting on the surface coat and that will give you the detail
that you need.
>>STAN WINSTON: And that's an epoxy resin?
>>JOHN ROSENGRANT: That's an epoxy resin, then they'll build up
what they were starting to lay out there is like a dough
which starts to thicken up the piece
and then it's backed with the fiberglass cloth.
>>RICHARD LANDON: And the dough is very light so by being thicker without being heavier
it's much more structurally stable.
>>JOHN ROSENGRANT: They're running his fin
and there's a substructure in there
that sort of takes up the room
and also has a bit of mechanics running through that
so that it would enable it's spine to move and flex.
>>RICHARD LANDON: ...the vertebrae extensions so they don't loose the body.
>>JOHN ROSENGRANT: It was carefully broken down
into pieces that would fit in our oven's,
even though we have huge ovens it's a huge character. So it was broken down sort of modular
like a gigantic model kit.
The girls are laying down a spandex,
a special made spandex
under-surface which the skin will be impregnated into.
That's going over a core
which represents the bone structure of the creature.
>>RICHARD LANDON: So even though some of the materials and techniques change some of them
don't.
It's still about a one to three inch foam latex skin.
>>JOHN ROSENGRANT: We could've used silicones and other
materials but the size of this thing is enormous.
The head alone I think is six feet long.
Not counting the neck and the weight would just be tremendous. Foam
is a very durable, paintable, patchable surface. This
character also had to go in the water.
So we had to be prepared for all of that.
It had to ram into things so that nose
surface on that is actually made out of slightly different material to compensate for that.
And even though you try to make it come out as good as possible
there is little patching and seams
and there's bleeder holes that allow, as Stan mentioned earlier
to not trap air.
And you just can't help it, there is a parting seam.