elf-n-safety wise - by "the sniff test" I did indeed mean a careful waft the vapour towards your nostrils - not sniffing flowers style. Treat acetone with reasonable care - as you would, say, petrol, and you won't go too far wrong. It is a fearsome solvent of many plastics, so don't spill it on your airfix battle of britain collection, nor on a helmet, and I'd be wary of getting it on any painted parts too. I'd not call it "corrosive" though. Fumes aren't good to breath, and it's inflammable with a low flash point -