[C320-list] Keel bolt primer

[Ferris Wills]

Thx for the input- I agree that priming the keel bolts sounds like a bad idea - the stainless definitely needs to be exposed to the air. I’m going to leave them alone and just make sure my bilge stays dry. 

Thx!
Ferris


> On Mar 8, 2023, at 6:09 PM, Troy Dunn via C320-list <c320-list at lists.catalina320.com> wrote:
> 
> I'm with Bruce.  Coating stainless steel bolts with Zinc seems like an odd
> suggestion.   In air it would be counter productive as it is the
> passivation of the stainless that keeps it from corroding, put a coating on
> top would seem to invite a crack in the paint that would lead to crevice
> corrosion.   AFAIK the keel bolts  are purposely designed and installed by
> the manufacturer to handle having water on them as a fully dry bilge isn’t
> even feasible in some of the earlier models that drain the fridge to the
> bilge. Having said all that, I’m not a metallurgist and I don’t know the
> implications of zinc painting stainless for underwater applications.   I
> think if your were going to coat with zinc something more permanent like
> electroplating would be preferred and in that case now you are talking
> about removing keel bolts and I would highly recommend not doing that.
> 
> Maybe just glob some Lanacote on the bolts?
> 
> FWIW-
> 
> Troy Dunn
> Hull #514