that also works if you mist black over your high build primer coat and will show high spots and low spots by what you sand off
[email protected] wrote: from "finishing a composite airplane" "I strongly recommend spraying a light coat of black primer, before you start filling, Even thou this step is not absolutely necessary it is very helpful in guiding where to direct more sanding and when to change to finer sandpaper grade. The filler becomes translucent as it gets thinner and the black color starts showing through as dark spots indicating you are getting close to the skin surface."" I mix blue pthalate dye with my filler for the same reason. I question the idea of having primer in the middle of layers of epoxy. Probably very minor. Bob P. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html
