Okay, after choosing what plane you are molding, in this case the fuz came from a crashed Opus, donated to me by a friend. I Repaired best I could, sanded and resprayed the Fuselage with a 2K (2 part) primer and 2K paint, each time wetting it flat down to 1000 grain paper. The last layer of Purple was sanded down to 1500 grain. Each successive layer is wet sanded to provide a smooth and error free surface, eventually you will find a surface that is free from errors, cracks and dust. This is time consuming but well worth it in the end as 2k paints provide the perfect surface to polish to a mirror finish.