Fisheye is caused by some type of oil contamination. This can come from many
sources. Some deodorants contain oils that can can be tranfered onto a panel
by contact. Swabbing Armor All on a tire outside the garage can do it too.
So can penetrant sprayed on a rusty bolt on one of the other cars in the
garage. Usually repeated cleaning with some Prep-Sol type of product will
remove the oil.
Oil contamination can and does occur inside your compressed air system. The
piston rings in the compressor head could be leaking oil into the air
stream. (Instant fisheye ) Just last week I vistied a body shop that was
having fisheye problems. I traced it to the intake for their compressor. It
was positioned directly over the vents of two 1000 gallon fuel oil tanks.
DUH! A diesel vehicle idling outside your shop can put enough oil into the
air that your compressor is sure to pull some of it into the system. If that
happens, fisheyes are sure to follow.
Unfortunately, once an air system is contaminated, there is no real way to
clean it. You have to find the source of the contamination and eliminate it.
Then put some quality filtration into your air system. Those filters should
at the very least include a 5 micron water and debris filter and a 0.01
micron oil coalescent filter. Several manufacturers make these as a set,
with a regulator included. Then clean out your gun like you were taking it
into surgery and add a new air hose used only for painting.
Larry Steckel
>From: Hottvr@aol.com
>Reply-To: Hottvr@aol.com
>To: Autox-cm@autox.team.net
>CC: Autox@autox.team.net
>Subject: Painting Fiberglass
>Date: Sun, 29 Apr 2001 19:22:30 EDT
>
>I bought several pieces of new fiberglass for my car over the winter. I'm
>having trouble painting them. The primer wants to "Fisheye" and will not
>adhere to the surface?
>Anyone have any tricks for this problem? The fiberglass parts are new. Any
>ideas would be appreciated.
>
>Mike(This just can't be this hard?)B. 99cm
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