[PSUBS-MAILIST] Clearances

[Rick Patton via Personal_Submersibles]

Hi Dan,
Yes I know as I went through the trouble of sending all the view ports to
Greg back east to anneal while he was working with a plastics company so
realized that that would have to be done once again. Does anyone know of
anyone who might do that?

Rick

On Tue, Dec 10, 2024 at 3:46 AM Daniel Lance via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick,
> After you get your acrylic viewport lense machined down to the proper
> diameter , it's very important to have it put in a temperature controlled
> oven and anneal the stresses induced during the machining process.
> Preferably by someone experienced in doing this type of work. ( not in your
> kitchen oven )
> Dan
>
> On Mon, Dec 9, 2024, 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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