[alt-photo] Re: NuArc 26-1KS ideal vacuum pressure?

[Loris Medici]

Jeremy: Thanks! The unit comes with a thick piece of black plastic as a
backing. Will use that.

Francis: In my specimen, glass thickness is 6mm and it's sized exactly the
same as the base...

Regards,
Loris.

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org On Behalf Of
francis schanberger
Sent: Tuesday, April 06, 2010 5:08 PM
To: The alternative photographic processes mailing list
Subject: [alt-photo] Re: NuArc 26-1KS ideal vacuum pressure?

When I bought my NuArk 26-1K a few years back, the vacuum glass didn't make
it intact during shipping. Eventually I hope to replace it. Would anyone
using this model be kind enough to measure the glass dimensions including
thickness? What type of glass should I purchase to replace it? Tempered?

At the moment I am content using split back frames including my new 16 x 20
frame from Bostick and Sullivan with the rounded corners. The double hinges
allow me to print two separate negetives with different exposure times,
simultaneously without losing registration.

-francis

On Tue, Apr 6, 2010 at 9:23 AM, Jeremy Moore <jeremydmoore at gmail.com> wrote:

> I use ~9, but that's assuming my dial is accurate. Any higher than 
> this setting and I don't get any increase in sharpness so I've just 
> left it there. You should also be sure your emulsified paper/negative 
> combo is backed by something to help keep the moisture from being sucked
out.
>
> -jeremy-