I have streaked the finish coat to look a lot like that, though in my case it was gray streaked with black.
To mimic that streaked board using UV cure poly resin, I would pour on, long stroke, cross stroke and tip stroke a finish coat in white, then while the resin was still wet, streak it with long strokes of a brush dipped in blue. For variety you can wobble the blue brush as you go down the length of the board.
Once streaked, let it sit for a few minutes to level out, then move it out into bright sunlight to cure it quickly.
Cautions: 1. This is art, not science, and your results will be different every time. 2. If you splash too much blue on, it may sag, especially near the rails. 3. To avoid sags you want to use UV cure because it can be cured almost immediately once you are done stroking it out. 4. Sags can be partially sanded out using wet/dry paper (220 grit) if they happen.
I decided to give up on this pigment-epoxy method and go for something easier and “safer” for me.
spackeled the board with a thin layer of “Red devil” “onetime” , light sanded , taped and spray painted
with "Dupli color - aqua acryl " .
sorry for the lousy pic’s ’ it’s from a cellphone:
after I stripped the tape off, I saw that even ater spackeling the lines aren’t perfect. ( damn EPS)
actually I knew it’s not going to be perfect and my original plan was to make a filler coat with clear epoxy over the lines where the white and blue meet. then making black pinlines over the blue-white line with a waterbased sharpie.
I thought this is the way to hide the imperfections when painting on such surfaces.
now, the thing is that I really really like it “as is” , and I don’t want to make a black pinline.
how should I deal with it?
I was thinking of folowing the “filler coat” method and tape again and instead of the black sharpie , spary again to make a nice blue line.
do reinforce the finbox. just be sure to use slow hardener, and keep it cool in temperature. I melted some eps once doing this, and it was difficult to fix.
edit: by the way, i helped a friend glass a 2lb eps longboard with double 6 oz warp glass deck, single six bottom. the board turned out great, but my friend wished he had used more glass. it was so light, he said that he would have gone with tripple six deck double six bottom. after about a month the deck had a lot of pressure marks.
