Re: [PSUBS-MAILIST] Welding Revisited

["Lil Brother LLC" <lil_brother_llc@bellsouth.net>]

Brian,

I think the topic has been thoroughly explored.

James Long
Owner/Designer
Lil Brother LLC (Instrument Division)
----- Original Message ----- 
From: "Brian Cox" <ojaivalleybeefarm@dslextreme.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, July 27, 2007 9:34 PM
Subject: Re: [PSUBS-MAILIST] Welding Revisited


James,
           Your sub can catastrophically fail from 0 to 200 feet just as 
easily as a sub designed for deeper.  It takes years of welding practice to 
really know what you are doing as far as welding goes.  Unless you have 
welded numerous joints and then cut them in half and inspected them over a 
period of time you may not have the consistancy that is needed.  For some 
non critical areas you may be able to get away with less quality welds.

Brian
----- Original Message ----- 
From: "Lil Brother LLC" <lil_brother_llc@bellsouth.net>
To: <personal_submersibles@psubs.org>
Sent: Tuesday, July 24, 2007 21:25
Subject: [PSUBS-MAILIST] Welding Revisited


> Ok,
>
> We have discussed welding and the methods involved.
>
> Shouldn't we also discuss the situations that pertain to each type and the
> critical requirement for each?
>
> I know that a professional welder knows what he is talking about, but I
> think x-ray on welds that will never pass regular scuba diving depths is a
> little extreme on the side of safety.
>
> I'm not knocking safety at all, I tend to lean to the safe side of
> everything. But there is a point to overkill when it comes to safety
> measures.
>
> I agree, if you are going to depths of 600 -1000 feet, I would definitely
> have the most certified welder available, and have the welds tested by
> x-ray.
>
> But I don't see the need to go to that measure if the sub is only going to 
> a
> max depth of 200 ft.  I do see the need of the welds being proper, 
> airtight
> and strong.
>
> But I'm a realist, so I can handle the opinions from whoever disagrees 
> with
> me.
>
> James Long
> Owner/Designer
> Lil Brother LLC (Instrument Division)
>
>
>
>
>
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