---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sat 01/23/16: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:34 PM - Filling on top of gel coat. (William Daniell) 2. 04:39 PM - Re: Filling on top of gel coat. (Fred Klein) ________________________________ Message 1 _____________________________________ Time: 02:34:31 PM PST US Subject: Europa-List: Filling on top of gel coat. From: William Daniell Is it ok to fill on top of gel coat orovided that its scuffed up. In other words is it necessary to go down to the fiberglass? I am dealing with the wing skin join and the fuselage join Thanks Will ________________________________ Message 2 _____________________________________ Time: 04:39:07 PM PST US From: Fred Klein Subject: Re: Europa-List: Filling on top of gel coat. Willsee indents belowFred > On Jan 23, 2016, at 2:12 PM, William Daniell wrote: > > Is it ok to fill on top of gel coat orovided that its scuffed up. In other words is it necessary to go down to the fiberglass? > I can tell you what I=99ve doneI think it=99s =9Cok=9Dthen again, I do not have any experience w/ the surfaces having been out in the sun for long periods of time, airborne or otherwise. Using a 3 foot long rigid sanding board, I sanded off gelcoat down to the FG in the high spots, following the manual re: orientation of strokes, grit, etc...thenusing a flexible, cushioned sanding =9Cboard=9D, I removed most of the gelcoat and thoroughly scuffed the lower portions of the surface. I did this to both top and bottom of wing. On the top surface of the wing, I applied the blue Poly Fiber =9CSuperFil=9D; as I recall, a 3 gallon kit was sufficient for top and bottom of tail planes, ailerons, flaps, and rudder. After curing and sanding, I rolled on multiple coats of Poly Fiber =9CUV Smooth Prime=9D to both top and underside surfaces. After sanding, for final filling, I used 3m =9CFlowable Finishing Putty=9D. My only regret at this point is that I wish that I had allowed much more time for curing of the SuperFil before sandingalthough I knew that the filler continues to shrink after it=99s initial cure, for some unknown reason, I blocked out this information and I began sanding it only a couple of weeks after it had been applied. I fear that over time, I will be able to detect dips between the ribs, though there are no signs after two years of any showing up. The most pleasurable part of the process was the sanding of the UV Smooth Prime, a very high-build primer, the sanding of which left me with a high level of satisfaction. Good luck... > I am dealing with the wing skin join and the fuselage join > > Thanks > > Will > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.