Re: [PSUBS-MAILIST] Aqua Jet Cutting My 2" Acrylic Viewport

[Jon Wallace <jonw@psubs.org>]

Since "little bit of a gap" is subjective, Stachiw says radial clearance 
0.06 in (1.5 mm) may lower the critical pressure of the window.

Brent Hartwig wrote:
> *Thanks Jon,   Ya I don't know about the exact stress issues either, 
> so I'll be annealling any windows cut this way until more favorable 
> data is available for are specific applications. Most the basic 
> flat viewports I've seen have a little bit of a gap between the OD of 
> the acrylic and the side walls of the welded in seat, so I don't see 
> the tiny bevel as being a real issue. We just need to make sure there 
> is a little gap or one might whind up having to lathe turn the part to 
> make it fit. *
> ** 
> **




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