[Collins] Re: Collins wrinkle...why important?

[Dr. Gerald N. Johnson, electrical engineer]

In the mid 60s the only way we could make multiple panels match for
color and sheen was to have them all painted the same hour in the paint
shop. More true at Collins in Texas than Cedar Rapids, but tiny
differences in baking temperature do change the color visibly as well as
the gloss or satin surface that also changes the apparent color to the
eye. Wrinkle paint should not be as tolerant of different conditions.
Surely a few drops different in the thinner or dryer will change the
final color and the density of wrinkle. I know from my one experiment in
wrinkling a panel that with the same paint applied with a brush I
achieved three different finishes. Some wrinkle (but not much), some
texture, and some with a flat surface. All with GC Wrinkle varnish.

Searching the Library of Congress, I found a book from 1949 with the
title: "The science of wrinkle finishing; the manufacture and
application of the "one coat" finish," by W. A. Waldie. Searching the
internet I found that there is a MIL spec for wrinkle enamel,
MIL-E-5888. Type I for fine wrinkle, type II for coarse wrinkle. Surely
there's application details in both of these documents, and previous
versions of the MIL spec. Someone close to Washington DC should be able
to find both of these documents to learn more.

73, Jerry, K0CQ, Technical Advisor to the CRA
-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.