Re: Steel prep for two part epoxy?

In article <fgbb43tkl20lajba7qer8fasgh0j3cnjfa@xxxxxxx>,
Michael Horowitz <mhorowit@xxxxxxx> wrote:

I have yet to decide what epoxy to use on my steel fuselage, so I have
no literature on how to prep the metal.

Part of my decision making is _where_ to do the work. If I have to use
MEK or like solvent, I don't want to do the work in a semi-enclosed
area; if a dry wipe-down or alchol is sufficient, then my work-place
of choice is OK.

Assuming I"ve brought to fuselage back to bare metal and have used
emery cloth so there exists a 'tooth' to the metal, does metal prep
require the use of MEK or acytone prior to primer application? - Mike

For steel (or any metal, for that matter), you have to remove all
oils/greases. A wipe down with lacquer thinner, MEK, alcohol, etc. will
do this. Look for a clean-looking cloth or paper towel.

You should also remove any welding scale, which consists of oxides of
iron before priming. This process usually involves fine-particulate
(glass beads are best) blasting of welded areas to clean the metal.

As soon as the metal is clean, apply two-part epoxy primers. Wear
appropriate breathing protection, as the stuff is cumulatively toxic and
allergenic.
.

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