[PSUBS-MAILIST] Hatch/Hatch Ring Flatness Evaluation

[Private via Personal_Submersibles]

Hi Steve,

This is normal. With Snoopy you can see light in places, even with the o-ring installed. The light disappears just hand-tightening the dogs.

Best,

Alec



> On Apr 26, 2014, at 5:08 PM, Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> All, I am evaluating my K-250 hard hatch/tower ring mating. This hard hatch was custom made for this K-250 by the previous owner.  
> 
> When the hatch is closed (w/o-ring removed) and the interior of the sub is brightly lit I notice I can see light between the hatch and hatch ring in places. The "gaps" are not huge and I believe with the o-ring installed no light would be seen.
> 
> However I believe it tells me there are some flatness issues in this interface. In a perfect world I should see no light.
> 
> My questions are, what is a precise way to identify the "high points" and is grinding the hatch surface vs. the tower ring the right surface to modify?
> 
> Steve
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