[PSUBS-MAILIST] Clearances

[Rick Patton via Personal_Submersibles]

I am not familiar with what you call "in-siku" machining?

Rick

On Tue, Dec 10, 2024 at 11:56 AM Daniel Lance via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick,
> Sean's suggestion of finding a machine shop that can do the in-situ
> machining to enlarge your viewport frame would probably produce the least
> amount of hassle. That's assuming there will be enough metal left on the
> perimeter flange after the machining process.
> If you have access to Jerry Stachiw's book "Handbook of Acrylics" it would
> certainly be worth the read . It goes into great detail outlining the
> recommended procedures for fabricating, machining and then annealing. A
> second annealing isn't out of the question ...it just must be done at
> carefully controlled lower temperatures.
> If you decide to go with reducing the diameter of the acrylic viewport ,
> one possible company that might be able to help you is "
> www.hydrospacegroup.com" . If not they might be able to recommend someone
> that can ?
> Dan
>
> On Mon, Dec 9, 2024 at 10:18 PM Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>>
>> Sent from my iPhone
>> I got a real surprise yesterday, I went to fit my large viewport in front
>> on my K-350 and it wouldn’t slide inside the receiver that I had machined
>> for it. They made it about 1/4” too small!
>> I should have double checked it before welding it into the front head but
>> didn’t.
>> I had the viewports cut in California and is to speck, 15”.  Kitteredge
>> called out using gasket but a lot of you I believe used Silaflex that comes
>> out of a tube.
>> I found someone who can chuck up something that is 16” in diameter so
>> will have him turn it down 1/4” or so, so it will fit in the receptacle but
>> I need enough of a gap on the edges for the Sikaflex to ooze out.
>> Your thoughts?
>> Rick
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