>>9412125I sand from 400 up to 1000 for most lighter colors and up to 12000 for some of the darker bits. Though sometimes I just take the black or dark grey panel liner and knock most the fluid off the brush and just give a light tough of it on the marks. This zaku fz has some awful marks in the arms. Bad seams too, but even with sanding it left awful looking marks on the green plastics. Main reason I didnt bother to submit for themgroup build. Anyway on the gelgoog most nubs cleaned up ok and a touch of that dark gray panel liner helped blend any of the white stress marks left after flush cutting the nubs off. A couple waterslides and a topcoat and youd never notice any of that on the gelgoog, but the zaku would need some paint to look decent.