Using J B Weld to repair alloy for stainless steel screws.

[PaulRainbow]

Hammerite works well on ally.

 

[penberth3]

.......Now I’d like to coat over the mast head plate with a ‘hammerite’ type of paint to protect those areas of unprotected metal surface. I’m assuming that the mast head body alloy has some sort of anodising treatment to it and to leave bare metal exposed may not be ideal. I figured that coating with a suitable paint barrier would protect it and a hammerite paint would be fine?
Your opinions observations would be appreciated. And I’d rather get this done whilst the mast is still down. ?
Thanks.

If you want to use Hammerite, I'd use the smooth version. The hammer finish has very little thickness, and therefore little protection, at the base of the "hammered" bits.

 

[shortjohnsilver]

That’s great, thanks gents.

 

[Tranona]

Suggest use the all metals primer first.

 

[justanothersailboat]

PaulRainbow is probably right in practice but the hammerite people themselves say use their "special metals primer" first. Must say I am much more impressed with the primer than the hammerite, the primer is great stuff, or at least my can is. I hope they've not reformulated it since then.

 

[emmalina]

Last time I fixed some mast bits I used 5 min epoxy and drilled it then helicoiled it works fine and in 20 years good chance it will unscrew LOL won't be my problem then

 

[footsoldier]

PaulRainbow is probably right in practice but the hammerite people themselves say use their "special metals primer" first. Must say I am much more impressed with the primer than the hammerite, the primer is great stuff, or at least my can is. I hope they've not reformulated it since then.

Couldn't agree more. When they changed the formula - a good few years ago - original Hammerite paint on its own ceased to be effective on ferrous materials in the way it used to. However their primer, I think it is now called Rust Buster No 2, remains very good. I use that on ferrous materials, and then top-coat it with whatever I have available in the appropriate colour - often original Hammerite as I still seem to have many tins of it. The two combined are still effective.