[PSUBS-MAILIST] Sand Blasting

[Alan via Personal_Submersibles]

David,
Some thoughts.
I would consult your sand blaster to see if he is going to have problems
getting in to the nose cone area. And also whoever is going to paint it
to check that the intended primer doesn't have a set time by which it needs
to have the next coat applied & that it is compatible with your intended marine
paint system. If they specialise in marine paint application they should be able 
to give you advise on when to prime.
I painted my sub with marine epoxy but had to buy specialised equipment
to apply the extra thick paint. Started to get expensive.
You may have a lot of attachment brackets you want to weld in for seats coms, scrubber, piping etc that you position at a later stage & that might burn your
external primer.
Another thought is that if you are getting it blasted professionally you don't
want to do it twice. You want them to do it once just before painting & clean
up around the welds for you.
Cheers Alan


> On 15/08/2018, at 5:19 AM, David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi Guys, I have a question on sandblasting my hull parts. The initial fabrication is almost complete and I was thinking that I might want to have the parts sand blasted prior to welding them all together. Maybe even a light primer seal coat to slow flash rust as it may be at the welders for a couple of weeks. Any thoughts or advice would be appreciated. I know right now every time I get near the parts I'm covered in black smudges.
> 
> 
> Best Regards,
> David Colombo
> 
> 804 College Ave
> Santa Rosa, CA. 95404
> (707) 536-1424
> www.SeaQuestor.com
> 
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