I recently read online that Dettol (HUH?!!) strips plastic models of their paint.
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Fill a glass jar 1/3 full of water and 1/3 full of Dettol (the basic stuff you get from the supermarket.)
Immerse object in the liquid and leave it overnight.
The paint on the models should soften into a slimy film which should easily be scrubbed off with an old toothbrush. Most of the paint SHOULD come off in one scrub -- if not - put back in the solution for another soak.
Heat up near boiling water and scrub the models again before dropping them into the water.
This gets rid of 99% of the paint and the models are completely undamaged.
Any greasy residue on the models scrub them again, this time using nail polish remover, being careful to rise the models afterwards, this seems to work.
Things to note:
1. The paint dries again soon after exposure to air.
It forms blobs which stain clothes and skin.
2. Your models will smell strongly of Dettol for a couple of days after. I suspect that undercoating will remove the smell completely.
3 The Dettol also seems to melt glue but not at the same rate as Nitromors or acetone.
NOW.....who will be first
Yeah...ok...I will give it a go next week on a coach roof

Mmmmm...But not in a glass jar ..of course.