Typically Duplicolor Primer is what I use exclusively. This time I was experimenting trying to get a better bite into the resin. Joseph, I did rinse well after the dish soap. I did think about scrubbing the parts with some Tide. I have heard about using Comet though.
Not to get off of the subject. There are a few different resins that I have seen recently, it is becoming difficult to know exactly what to do with them, in terms of prep, and what they are made of. I recieved some resin door panels, and seats from Ed Fluck. Beautiful work, they looked like you could just paint them on the spot.I also recieved a Body from Bandit Resins Very good casting. I dont much care for the resin, although its white, and odorless it appears softer, and more flexible. That is almost like Styrene plastic VS Bakelite.