Simple Green

I was asked about this when I mentioned it as my paint stripper of choice. I've used it on both metal and plastic figs with absolutely no damage whatsoever. I simply dump the mini into a container of undiluted solution for at least an hour (and sometimes many weeks if I forget about them)

I found a review over at The Astronomicon here:
http://theastronomican.blogspot.com/2009/10/review-simple-green.html

Here in Australia its commonly available, including at Bunnings.