[PSUBS-MAILIST] Test dome.

Alec Smyth via Personal_Submersibles personal_submersibles at psubs.org
Fri Dec 13 20:52:40 EST 2019


Hi David,

I recall Greg's K250 domes also had a flange because they were blown, but I
also remember him saying it was absolutely essential to machine off the
flange (and a little more) because the bend stresses the acrylic making it
markedly weaker. He would remove the flange on a planer, and then anneal
the dome.

When you say test, d'you mean just for test fitting the parts?

Best,
Alec

On Fri, Dec 13, 2019 at 8:18 PM David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi guys, Christmas came early today with the delivery of my blown test
> dome which is 30 inch OD, full hemi with flange. One for each pilot. Anyone
> jealous? Next step is to do a dry fit as is and a second option to be a 150
> degree dome vs 180. The second option would have no flange, just a land.
> The resaon, is it may be a cost saving measure. Quote from Stanley Plastics
> in the UK $28,000 for two slush cast domes with a machine finish. As this
> is beyond my budget, i am looking at alternatives. I'll send photos once
> its on the temp hatch ring with me in it. I'm thinking though I'm liking
> the size of this dome!
>
> https://www.facebook.com/1145380217/posts/10221164830487440/
>
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