[PSUBS-MAILIST] K-250 dome advice

[Marc de Piolenc via Personal_Submersibles]

I got off lucky - only $75 I think.

On 19/04/2022 18:42, James Frankland via Personal_Submersibles wrote:
> 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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