Gale Force Nine 'concrete rubble' alternative?

[Sangennaru]

I've a solution, but it's quite hard to obtain:

all you need is a bit of plaster (not plaster of paris, but [STUCCO]), please find a translation in english.
if you put a 1 cm layer of this on a surface, it should dry in around 2 or 3 days. but if you let it dry on the sunlight, it should dry really faster on the surface, leaving this kind of effect...
it happened lots of times to me, but I didn't want it!

[Glitzer]

if you put a 1 cm layer of this on a surface, it should dry in around 2 or 3 days. but if you let it dry on the sunlight, it should dry really faster on the surface, leaving this kind of effect...
it happened lots of times to me, but I didn't want it!

Do you really believe such effects are achievable at will? Whenever I wanted things like that to hapen they just didn't 

[Sangennaru]

i guess it should be good to make some experiments... I tkink that it should work! 

maybe putting the stuff in the hoven... dunno! ^^