Beach board 4 - experimenting with rocks

Only just got back from church band rehearsal after a busy day, so didn't really have time to edit the podcast as have to be off to parents early.

Did have time to do a little on the beach boards, specifically seeing if I can figure out a way to do the limestone rocks on a tester piece. This gallery is a combination of Mal the Terrain Tutor and Ballan Parkway's methods - follow the captions.

Here's a left over piece of pink foam from the
promontory/bay build the other day.  If I could have been bothered I'd
have roughly carved the surface with a craft knife to be less flat, but
for the purposes of this test piece it doesn't matter.

And this is just a piece of freshly screwed up baking foil.
All you do is roll it, pressing quite hard, on the surface of the foam... 

And presto! instant texture.

Same again, but this is the lid from a Gü cheesecake pot,
so it's noticeably stiffer foil. This I more pressed than rolled,
almost using it as a stamp.

...and even more texture. If you just wanted some random
rock, this would do fine. However, I want limestone...

Ideally what I wanted was the double-toothed saw blade off
my previous Swiss Army knife, but in the absence of that, this
old kid's safety knife from our kitchen drawer will do
(with Anne's blessing! 

(Slight focus issue, sorry)
Just use it to gouge horizontal strata in the rock face. The reason for the wider,
blunter blade is it leaves wide gouges and it also tends to rip bits from
the edges, which makes it look less even.

Final stage for tonight, paint with some neutral coloured emulsion and
leave to dry, With hindsight I might recoat with a paint/water/PVA
mix to seal it even better. Yes, I know rocks aren't grey.