try this on utube, really good basic instructions
totally agree with the boiling water thing , keep dipping it to keep it pliable, and put it in to small bits when youre done so you can remould the left overs.
all ive made are some plastic blocks for body mounting on a 1/24 plastic body kit.... will see how it goes.
I has a nylon feel .. so not sure how well it react to glueing with plastic glue or super glue.
to cool it ... chuck in the fridge for an hour or so.
when you cut it with a dremel or file it it is possible that it heats up so goes back to a more flexible state .... so hand saws are probably best for cutting
it has to be cool when you work on it.
looks like it may be good if you want to mould things (in a proper mould)
will update later.