Well you can wipe down the plastic with a good degreaser or rubbing alcoholect and you wont have to blast it. My thoughts are that the blasting media will pit the plastics almost instantly. I could be wrong.
Low pressure?? I was thinking the same thing but thought if I could control it a little and what not I might get away with it. The interior was Armor-All'd through and through, even the leather seats. Previous owner was not interior savvy aparently. So that Armor-All has basically baked into all the plastics and I have to get that old paint off. I've already fingernail picked some of it off and it's actually black underneath so it should be easy to monitor while I blast...but hell this is the first time I've done something like this. Guess I'll have to practice first.
B