Paint question
On Nov 14, 7:37*am, JJ Sinclair wrote:
1. Can I use PPG Concept over the Imron?
I'd stick with the paint that's on there (Imron)
2. How do I blend the spray edges into the Imron for a seamless finish?
Hi Brian,
Blending paint is a difficult proposition at best. The first issue is
color match, Imron shouldn't fade, but get the original color if you
can find it (should be in the log book). Then try a little spot (dab
from your pinkie) to see how it looks, remember it will dry a tad
darker than the wet color. The area where the paint is to go must be
lightly sanded, go beyond the intended paint area a good 6 inches in
all directions with 220 dry sanding. Then mask at the edge of your
extended sanding. The trick is to never touch the masking tape with
sprayed paint or you will build up a lip and when trying to wet-sand-
out this lip, you will sand too deep on the original paint and start
to show the underlying primer. Ugh, I hate it when that happens! Only
thing to do then is to expand your paint area another 6", re-mask and
paint again. If you do it right the first time, the over-spray will
fall well short of the masked area and is easily wet-sanded out with
600 wet, followed by 800 wet, then buff after 3 days of paint curing
time.
Good luck, it only took me 30 years to figure out the above and don't
ask me to do it voluntarily.
Aircraft are designed by geniuses to be flown by idiots!
JJ
IMVHO, color matching Imron is extremely difficult. There are more
Imron whites on the color chart than I would have ever imagined. When
it came time to touch up the Imron on a glider I once owned, there was
no color info in the logbook, only the Imron entry. I got the color
chart and had a half a dozen female/male persons attempt to match it
under natural light. Depending on whether the sun was on the wing or
under cloud shadow, they narrowed it to two tints. I went with the
best four of six, a committee decision, on which was the right tint.
Turned out slightly bluer than the original. The other tint was
slightly grayer and may have ultimately been a better match. All I
can say is good luck. A BGA senior inspector one said anyone painting
a glider should use only base white, that tinting only causes
problems.
Frank Whiteley
|