Poly super strippa (Semi-gel paint and varnish remover) by Le Page from the hardware store.
A couple of $ for 500ml can, a life time supply.
Ten minutes then rinse will take just about anything off.
You do need gloves but no bad smell as its non-flammable.
Once you get a production line going you can do a lot in one afternoon.
It also takes off the old crazy glue well (old tooth brush helps).
69 Eland's, 18 Rooikats, 15 Ratels and about 40 Samil trucks so far.
Only problem I had was fishing out the small parts from the gooo. It starts off clear then takes the colour of the paint coming off the model. Hard to find the smaller turrets.
I've yet to find a paint job it won't remove and my own are some of the worst you would ever see
