Edges of Transformer Lamination Stack - do they rust?

[fromnowon]

Hello -

Started working on my Crack today, painted the bell and the top of the plate with blue rustoleum and glued up the base.

Just curious if it's a good idea (or not) to add something to the edges of the transformer lamination stack to prevent rust.

Some kind of sealer is on there already, I think, and maybe it's sufficiently permanent.  I could brush on some clear coat easily if it can go on top of whatever is on the stack already.  Or I have some paste wax that might work to further seal the edges.  Or just leave it as is!

What did you guys do?  Thanks for any advice.

[Paul Birkeland]

Applying black paint to the edges is a good idea.  Be sure it's not water based though.

I've found that black lacquer (from the hardware store) or VHT (from the autoparts store) get the job done pretty nicely. 

[fromnowon]

thanks!
I just figured out that the those "honeycomb" lines are going to face to the front so yeah I think I will brush on some black Rustoleum enamel I have sitting around.
Is it necessary to clean the edges with some lacquer thinner for adhesion?  I suppose so . . . I read elsewhere not to sand the lamination edges.
I appreciate it.

[Paul Birkeland]

You can clean the edges with a scotchbrite pad and some alcohol.  I would not use lacquer thinner on the stack. 

Rustoleum enamel will work OK, that stuff just takes ages to dry.  The last time I tried using some I think it took about a week before the paint had cured.  Instant dry spray lacquer dries in about 5 minutes.