[PSUBS-MAILIST] K-250 dome advice

[James Frankland via Personal_Submersibles]

Giving them away? Jeez, I paid $130USD for mine 10 years ago.

Giving them away!  I paid £150 for my copy, lost it in a house move, bought
a replacement for another £150, then later found the first one......

🙄



On Mon, 18 Apr 2022 at 23:13, Tim Novak via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Giving them away? Jeez, I paid $130USD for mine 10 years ago.
>
>
>
> *From:* Personal_Submersibles [mailto:
> personal_submersibles-bounces at psubs.org] *On Behalf Of *Jon Wallace via
> Personal_Submersibles
> *Sent:* Monday, April 18, 2022 2:11 PM
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Subject:* Re: [PSUBS-MAILIST] K-250 dome advice
>
>
>
> Stachiw's book is called "Handbook of Acrylics".  Most of us have a copy
> of it.  Stachiw's son was giving them away a couple years ago.
>
>
>
>
>
> On Monday, April 18, 2022, 01:23:09 PM EDT, Philippe Robert via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
>
>
>
> The maker for my dome is Precision Plastics. I have a seat in my pressure
> hull on the VBT and with a dome of  9in height only 3 inch left to my head.
> What is the title of your Stachiw book ?
>
>
>
> Regards
>
>
>
> Le lun. 18 avr. 2022 à 10:24, Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org> a écrit :
>
> Have you tried Precision Plastics in Maryland USA?  They made a dome to
> specs for Brian Hughes.
>
>
>
> The answer to your question is yes, but I don't have my Stachiw book with
> me to see what the actual rating would be.  You can ask someone else on the
> list to check their Stachiw book, or I will be back home around the 24th
> and can check my book when I return.  You obviously will have less head
> room with a 9-inch depth.  You also have to make sure that they anneal the
> dome according to ASME standards or it may fail prematurely.
>
>
>
> Jon
>
>
>
>
>
> On Monday, April 18, 2022, 09:58:33 AM EDT, Philippe Robert via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
>
>
>
> Hi All,
>
>
>
> I have an issue in the making of my k-250 dome. I asked for advice from
> some members in the past and now I have a new problem. The company that
> makes my dome cannot blow the dome to the specs (12 in height 24 in wide).
> So the max height that is acceptable is 9in to avoid the dome breaking when
> it is formed. So my question is ,is it acceptable to have a smaller height
> and I was wondering if the pressure rating  of the dome will be ok.
>
>
>
> Thanks
>
>
>
> Philippe
>
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