By Leew - 7/10/2015 10:41:18 PM
Just wondering, can carbon be sand-blasted or etched? Basically I have just bought a CFRP monocoque chassis. I got it at a substantial discount as while it is structurally sound, it is cosmetically flawed due to being post-cured at too high temperature, causing some rippling in the surface in a few areas. I need to decide on the best way to smooth the surface ready for painting. If I was to sand the ripples off with normal abrasive paper until the surface was smooth I fear I would be weakening the structure, as I'd be sanding down into the fiber before I got down to the bottom of the ripples. Another option I have considered is to put filler in the ripples, however sanding into the bottom of the "valleys" would be awkward with normal sandpaper in order to give the filler a key to bond to. So I was wondering, is there anyway I could lightly sandblast these areas in order to get a nice key for applying filler in the low spots, or alternatively, is there some chemical I could apply to the surface to lightly etch the surface of the resin in order to give a key to body filler?
May thanks, lee.
|
By Dravis - 7/13/2015 10:28:36 PM
I normally just use a brass/bronze bristled brush .. for larger areas I use one of the ones you buy to clean your barbeque grill ... It gets into the low spots no problem, and if you're carefull, it will just lightly abrade the surface, just enough to get a good bond ..
|
|