The Murphy Builders Site

I have start prime the "matting" part (I am not sure how to spell mat.....) with epoxy primer and a paint brush. As some suggestion I received earlier, I mix just a little "Gerber baby food jar" that I keep in the freezer between use. I will try to put the paint brush in a "saran wrapp" and put it too in the freezer, do you have better solution?

When we rivet parts that the rivets are not visible from the outside after the aircraft is completed, is there an importance of the side you rivet the part... ex: when I rivet the ailerons ribs with the spar, if two of the five rivets are easier to rivet from the other side, is there a problem (except it will be not as "cute" as all from the same side).

Sico aircraft epoxy primer is much much cheaper than the polyfiber one. Because I am a Industrial Sico distributor, I have some contact.... I have talk couple of time in the last days to the chemist who developped it. Scothbrite with lacquer thinner/acetone/or met-sol will give a excellent profil for the adherence of the primer. The flexibility/adherence/and chemical resistance of that product have been developped for aircraft flying at 35000' /+ ..... I am totally confident with it. You can check locally with industrial Sico dist.. Do not accept the standard industrial epoxy primer, it will be the job, they are sure of it but the adherence/flexibility of the aircraft one have so improved that the price difference should not be a factor. If you don't find them, make a phone call at their office Quebec region is 800-561-7089, Ontario 800-828-1969 and for outside of Canada I think it is 450-442-7906. It is a Canadian made products!



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Hi Jean

For some reason there are no line returns when I try to reply to your
message, just very long sentances that go off the right side of my
screen forever, so I snipped your original message out.

I use little 1/2" wide acid brushes with the primer. About 10 of them
for a dollar. I wipe it with a rag, dip it in acetone, and wipe it again
between uses. I usually get the acetone for about cdn$14. per gallon
from Home Depot or a fibreglass supplier.

MAM has said a couple of times that it does not matter which side the
rivet goes in. I do whichever is easier just like you are suggesting.
However if I have a choice and I an joining a thick piece to a thin
piece I still like to insert the rivet from the thin side so the bigger
factory head is against the thin piece of aluminum. I am sure it doesn't
really matter though.

I appreciate your comments about Sico. Bob Johnson used Sico Acrythane I
think on his Rebel and I am thinking of doing the same. He also said the
flexibility of it was so good that he didn't think the flex agent was
needed. That is good because I've been told that the flex agent only
lasts for a couple of years anyway and I really don't want the paint to
peel off the flaperons...

Ken




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