Paint stripper

I am just trying to strip an intake manifold that has two coats of primer over a coat of black over a coat of orange.
It is a Victor 340 so worth messing with but it is taking forever to get anywhere in my blast cabinet.

Its a mess.

Not sure what they were thinking?
I used to sandblast locomotives with a heavy duty sandblasting setup. The locomotives that had epoxy type paint and some even had a clear coat back in the '80s were extremely hard to remove. The ones that had a straight enamel paint, well it practically flew off them. My point is, the stronger the paint the harder it is to remove. You just have to have patience. :)