i use the dis. brushes for flux, they have the black syn. fiber bristles and the alum. handle- they dont pull out and get stuck in your finish- i dont dilute the epxy, ive used 5min to overnight stuff and it seals the same- id recomend 2 coats and its critical the mold is fairly dry so the epoxy sticks decent. i also like to slightly heat the mold before pouring, also if you dont seal all the pores in the pop, you will see more bubbles in the plastic, bubbles will also form if you overheat the plastisol. also if you run a heat gun over the epoxy, especially if you use 5 min i helps it to self level- again my .02