[PSUBS-MAILIST] Group purchase of buoyancy foam?

[Rick Patton via Personal_Submersibles]

I bought two 02 cleaned first stage regs a while ago when I thought I was
going to be using aluminum 80,s but that turned out to be not doable where
I live so now going with my shop 125 cu ft 02 bottles so I have been
looking for a CGA adapter that goes from a CGA540 to a regular scuba valve
for my first stage. I found just what I was looking for on Amazon for a
very reasonable price but it said that they were out of them and not sure
if or when they would have any more. I kept looking but found nothing else.
Anyone have them and can tell me where to but them?
Rick

On Thu, Jan 3, 2019 at 5:47 PM Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Ah, sorry about the unit typo - you are right of course its 15 lbs per cf.
> Its coming out of the standard block, but I'm not sure they're charging me
> for the whole of it. What they quoted me specifically was $1500 for four
> pieces 2.75x11x80. Maybe if we get the whole block the price doesn't go up,
> but I'll have to ask. No worries about the timeline, this is not at all
> urgent for me as the sub isn't going back in the water until the spring,
> and attaching these buoyancy blocks should be pretty straightforward. Let
> me know...
>
> Best,
> Alec
>
> On Thu, Jan 3, 2019 at 7:18 PM David Colombo via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Hi Alec,
>> I think you mean 15#cft. To place the order, they would be cutting down
>> their standard block 10x24x100 to your required dimensions? I need to
>> figure out area amount I will need for my wings, but I think a block that
>> was 5.5x24x100 could work for me. I'm picking up some 36x48x96 blocks of
>> foam tonight to start the exoskeleton shaping.Once I have the rib form
>> assembles on the jig, I'll know for sure the volume I would need. What is
>> your time line to place the order?
>>
>> Best Regards,
>> David Colombo
>>
>> 804 College Ave
>> Santa Rosa, CA. 95404
>> (707) 536-1424
>> www.SeaQuestor.com
>>
>>
>>
>> On Thu, Jan 3, 2019 at 2:59 PM Alec Smyth via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> Hi Dave,
>>>
>>> I was thinking the 15 lb/ci one that goes to 700 feet uncoated. I’ve no
>>> idea the shipping cost, but hopefully they’d ship part of the order to me
>>> and part to you, which should be much cheaper than if I reshipped without
>>> access to commercial rates. Something I neglected to mention is that you
>>> don’t need to get your pieces in 2.75” thickness - it could be one piece
>>> 5.5” thick instead, which might give you some flexibility.
>>>
>>> Best,
>>>
>>> Alec
>>>
>>>
>>> On Jan 3, 2019, at 4:06 PM, David Colombo via Personal_Submersibles <
>>> personal_submersibles at psubs.org> wrote:
>>>
>>> Hi Alec,
>>> Which density are you thinking? Also what would be the shipping cost be
>>> to California?
>>> Best Regards,
>>> David Colombo
>>>
>>> 804 College Ave
>>> Santa Rosa, CA. 95404
>>> (707) 536-1424
>>> www.SeaQuestor.com
>>>
>>>
>>>
>>> On Thu, Jan 3, 2019 at 8:44 AM Alec Smyth via Personal_Submersibles <
>>> personal_submersibles at psubs.org> wrote:
>>>
>>>> Hi guys,
>>>>
>>>> I want to add 120lbs of buoyancy for Shackleton for fresh water
>>>> operations, and am considering a material that is far cheaper than
>>>> syntactic foam:
>>>>
>>>>
>>>> https://www.generalplastics.com/products/r-3300?_vsrefdom=ppcgoogle&ex=ccfxuh-eep549-oi6d57&gclid=CjwKCAiAgrfhBRA3EiwAnfF4tguYtTnBvjnUAv6sLRpBMFLlhnHIu87eS-CqqhHoh6POiHTs9LEYWxoCGDoQAvD_BwE
>>>>
>>>> It comes in flat panels, available in several densities. It can be cut,
>>>> sanded, and used as is to the rated depth, but the depth rating doubles if
>>>> you coat it with epoxy paint. Here is an article describing its application.
>>>>
>>>>
>>>> https://sea-technology.com/feature-article-low-density-polyurethane-foam-for-subsea-buoyancy-systems
>>>>
>>>> I just got off the phone with the vendor, discussing how my dimensions
>>>> can most efficiently come out of the standard sizes in which it is
>>>> produced, and the bottom line is that I would order two panels measuring
>>>> 80x11x2.75 inches. But here's the thing, they have a minimum order of
>>>> $1500, and that is reached by making it FOUR panels instead of my two.
>>>>
>>>> Would anyone be interested in joining me to make a joint purchase?
>>>>
>>>> Thanks,
>>>> Alec
>>>>
>>>>
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