I want to just highlight one material that we used because of the results that we achieved.
After our first disaster with resin we tried again and got much better results. We achieved “controlled cracking,” in that it cracked just a few times and we were also able to produce cracks in it after it had hardened with a hammer and centerpoint.
What was nice about these cracks was that they were completely three dimensional, some of them even curved, and in the ones we did with the hammer we could really see the pattern create by the force applied.
Its starts out funny and then you see what I was talking about.