On Sun, 03 Sep 2017 21:40:34 -0700, Gunner Asch
wrote:

On Sat, 02 Sep 2017 22:18:56 -0400, wrote:


If you are patching with a fiberglass or plasric filler make sure it
uses an epoxy resin, not polyester. An epoxy/glass filler seals the
patch. Polyester filler is porous and does not seal out water. You
can
use bondo to profile after the hole is patched.

Well said!

Gunner, who does a lot of fiberglass work on boats

If I had a good recommendation for a specific epoxy auto body rust
repair product I would be trying it.
I gave you the recommendation. West systems epoxy and either chop mat
ot woven glass mat well filled and pressed securely into place over
the perforated metal, well cleaned on both sides if possible. Let the
resin soak through and get onto the back of the body material.

West systems is good..but ****merunning its expensive. And there are
other Epoxies (only use epoxy) that are much cheaper and work as well
OR better than West Systmes

http://www.thomasnet.com/southern-ca...7571208-1.html

I would recommend a Marine grade though....

https://www.ebay.com/sch/i.html?_fro...resin&_sacat=0


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I agree there are others out there that may be less expensived - or
mabee just "cheaper". West is a known entity - really can't go wrong
with it, while "brand X" may or may not be quality stuff.

If you have experience with another product that you know works, use
it. I'm just saying if you want to do the job, I know THIS works.

The composite aircraft guys generally use West around here.