Re: [PSUBS-MAILIST] Viewport retaining bolts

["Sean T. Stevenson" <cast55@telus.net>]

Wouldn't anodic protection (zincs) take care of this?

-Sean

On Monday 18 December 2006 14:54, Smyth, Alec wrote:
> I'm building viewport seats for flat disc viewports like the ones in a
> K-350 coning tower. But I'm wondering about a little detail that folks
> surely have some practical advice on. The acrylic is to be retained by a
> screwed-down ring. With that arrangement, how do you avoid rust in the
> bolt threads? (my seats are not SS). I'm thinking I could use studs with
> nuts instead of bolts, though it wouldn't look nice. Or I could get
> fancy and use O rings to keep the threads dry. But everyone else seems
> to use ordinary SS bolts and I haven't seen rust streaks coming from
> them. How d'you manage that, are you just gooping the threads up with
> some sealant?
>
> Thanks,
>
> Alec
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