I tried using this, i sprayed the model, the whole model put in the plastic bag and sealed it and left it overnight, then got a brush and under warm water, started scrubbing it. Only the paint from the arms came off wonderfully, all the other parts like body, legs, and helmet didn\'t come off at all, they stayed how they are. i have 40k orks by the way, and on them i have used oven cleaner. What am i doing wrong, how can i improve on this.