You could always do your re-shaping/sanding, and then do a tinted gloss or gelcoat on them. If you go translucid, the variations in colour from sanding depths usually end in a slightly marbled finish (you can also do a translucid marbled tint to start with, pretty cool looking). I used to be scared to this method, but if you control your sanding it goes just fine. Just used a tinted gelcoat to finish up a restoration on an extremely beat up '65 Yater and am more than satisfied with the result.
Sure that there are other ways out there as well! Enjoy.
I think your stuck with the color. If you sand one thinner your going to sand a lot to change that color, then your going to be changing the flex of the finn? If your trying to get two similar fins made out of different cloth, and different pigments, you’d better start over with two new fins. Why not lay up a new panel of glass and do two shiney new fins…you know you want to, then you can tell us the specs, and post the pictures.
Or maybe you could do this…sand the fins down to a pre glass thickness, like a pair of wood fins. Then mix up a thick pigmented batch of resin and re glass the two fins with 2 layers of 6 oz on each side. Hotcoat with a thick batch of pigmented resin, and polish out…done
yep , I might end up with two sets of identical fins , as I like the outline and colours of each as they are … I was just doing the usual “chipper money-saving/ recycling” thing / idea first …
hopefully next time I’m on hicksy’s computer , I may have the finished product to show and tell …plus maybe in my new mal [“longboard”] , once the auslocks board is all finished … wooohoooo …eight to ten weeks of concentrated effort from the hickster on that one , in between work , a new swimming pool being put in his garden , raising a family , and driving the kombi !!