[C320-list] Third H20 tank frame

[Robert Seastream]

Mind you, I did try selling my wife the concept that a larger boat  
would have the greater FW tankage she wanted, but she wasn't buying.   
Smart girl.  ;-)

Bob

On Apr 3, 2008, at 6:05 PM, Jeff Hare wrote:

> Ah.. ok, so perhaps it is a type of gelcoat after all.  There might  
> have
> been a discussion a while back about this with some response from  
> Gerry that
> I didn't pay a lot of attention to.
>
> I had asked Frank about the problem of the insides of some lockers  
> being
> tacky in places when we first got the boat and he said something  
> about some
> batches of the bilge paint not curing fully and had some solution  
> that I
> don't recall anymore.
>
> In any event, it does come off in chunks and isn't a structural  
> bond, so I
> guess that's what the real issue was about anyway.
>
> -Jeff
>
>
>
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of  
> Hansen, Brian
> Sent: Thursday, April 03, 2008 5:22 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Third H20 tank frame
>
>
> In Australia that surface material is named Flowcoat and it's  
> essentially
> gelcoat with wax and styrene added. When the Flowcoat cures the wax &
> styrene should come to the surface to give a dry hard surface.
>
> Because the wax & styrene comes to the surface it makes it very  
> important to
> sand or grind the surface well if you want to adhere something to it.
>
> Brian
>
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Jeff  
> Hare
> Sent: Friday, 4 April 2008 3:46 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Third H20 tank frame
>
> They don't gelcoat the inside of the hull.
>
> It's bilge paint which goes on really thick to smooth off and  
> protect the
> fiberglass inside the hull.  And you're right, it frequently doesn't  
> cure
> all that well because it has a tendency to stick to anything in  
> contact with
> it for long.  There was another thread on that sometime back.  But  
> in my
> case, the area was well cured but still isn't a structural sound  
> bond.  It's
> cosmetic/protective.
>
> -Jeff
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Chris  
> Burti
> Sent: Thursday, April 03, 2008 12:31 PM
> To: C320-List at catalina320.com
> Subject: Re: [C320-list] Third H20 tank frame
>
> ummmm that ain't paint...it is actually some sort of gelcoat
> formulation...if it is cured it won't come off. That said...sanding is
> always a good idea.
>
> On Thu, Apr 3, 2008 at 10:26 AM, Jeff Hare <catalina at thehares.com>  
> wrote:
>
>> Bob,
>>
>> The reason you need to remove the paint is because the paint  
>> doesn't have
>> a
>> good bond with the fiberglass underneath.
>>
>> In one instance, I epoxy'd a board to the hull.  That board broke  
>> free
>> after
>> a while.  The separation happened between the paint and the  
>> fiberglass,
>> not
>> between the epoxy and the paint.
>>
>> Given the weight of the water tank with sloshing water, I'd want to  
>> grind
>> off the paint first.
>>
>> If I were doing that, I'd use a good hardwood that won't rot like  
>> IPE and
>> will hold fasteners for life without having to be glassed in.
>>
>> -Jeff
>>
>> -----Original Message-----
>> From: c320-list-bounces at lists.catalina320.com
>> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Robert
>> Seastream
>> Sent: Thursday, April 03, 2008 7:55 AM
>> To: C320-List at Catalina320.com
>> Subject: [C320-list] Third H20 tank frame
>>
>> Bruce Stanley fiberglassed in his tank frame (the 2X2 lumber strips),
>> as 3M 5200 was unavailable to him.  He sanded the paint off the hull
>> interior to ensure a good 'glass set.
>> I'm using 5200.  Need I sand the paint off as he did, or just clean
>> and lightly sand the painted surface?  Also, may 2X4 strips be used
>> instead?
>>
>> Bob Seastream
>> Intuition # 906
>>
>>
>
>
> -- 
> Chris Burti
> Farmville, NC
>
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