[PSUBS-MAILIST] Hull Painting

[Alec Smyth via Personal_Submersibles]

It comes in one gallon cans, but since there's parts A and B to mix up,
that means the minimum purchase is two gallons. That'll be plenty to paint
the whole boat. I do about 3-4 coats.

Best,
Alec

On Mon, Jun 24, 2019 at 3:46 PM Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> What about coverage?  Did you require a gallon?  Two gallons?
>
>
>
> On Monday, June 24, 2019, 03:06:52 PM EDT, Alec Smyth via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hi Jon,
>
> I've always used "mill white" Macropoxy 646. I like that it goes straight
> onto bare metal and has really good coverage. Its thick, appropriate for
> application with a roller. This makes it really easy to patch. I haven't
> measured the work or cure times, but they're generous - I'd say when you
> mix it up, you probably have at least an hour to apply, so it's never been
> an issue because I mix a bit at a time. It dries to the touch in probably
> 4-8 hours.
>
> Negatives include yellowing in sunlight and susceptibility to scratching.
> With Snoopy, I just spray painted the CT dayglo orange over the Macropoxy,
> but the sun would turn it a brick-like color pretty quick. On Shackleton,
> the CT was painted in Macropoxy as well but then top-coated in a less
> bright orange by the guy who did the sandblasting. Although it's not as
> bright as the dayglo was, I've noticed this top-coat has not dulled at all
> and is MUCH less susceptible to scratching. It has made me think that in
> the future, the ideal would be to paint the sub in Macropoxy and then
> top-coat in something harder. Unfortunately, I don't know exactly what
> paint I have on that CT.
>
> Best,
> Alec
>
> On Mon, Jun 24, 2019 at 2:26 PM Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alec Smyth...can you give us some more details on your experience with
> Sherwin Williams paint and your hull painting experience.
>
> 1) Do you recall which Macropoxy product you used?  There are multiple
> types listed on their web site.
> 2) How much "working time" did you have with the product?
> 3) How long before it dried to touch?  Cured?
>
> It looks like white and black colors are the only ones they list as
> acceptable for "immersion" in salt water.  I can't help but wonder what the
> difference is between the same product in yellow or red options.
>
> I haven't decided what I'm going to do yet since I may be limited to hand
> painting the 600 in my yard, uncovered.  The place I am having sandblast
> the sub does not paint so I either have to find some other place or do it
> myself.  One thing, I don't care about the finish.  I actually prefer
> Alec's method of hand rolling with "orange-peel" results simply because
> repairs of scratches and dings would blend better (I think).
>
> Anyway....rambling here and looking for thoughts from the group.
>
> Jon
>
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