Re: coating method

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From: Kate Mahoney (kateb@paradise.net.nz)
Date: 09/05/03-12:27:51 AM Z


----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Friday, September 05, 2003 10:12 AM
Subject: Re: coating method

> From: Kate Mahoney <kateb@paradise.net.nz>
> Subject: Re: coating method
> Date: Fri, 05 Sep 2003 09:55:14 +1200
>
> > So far the foam brushes have been the best for me, but I'm getting
> > frustrated by streaking too. I've been thinking of dipping. I've tried
> > swirling the emulsion on like collodion but it's too viscous even
without
> > the hardener.
>
> So are you coating dry plates? What kinds of emulsions are you coating?
Yes, dry plates that have been coated with a gelatine/chrome alum mix
previously. I use Tetanal "work"emulsion, but I'm keen to try multicoloured
gum on glass in the future.
>
> > I'm only coating 4x5 glass at the moment so would be interested in
hearing
> > any better methos you can work out - i might try the cotton flannel as
it
> > seems that it's the bubbles in the foam edge that cause the streaking.
>
> That's the same idea as mine. I thought glass rod with or without wire
> would work fine for glass, but did you try them?

No, glass rods maybe! I will try to get some made for me.
>
> > I've never thought of hardening before coating - does this prevent
> > frilling and lifting????
>
> Don't know, but the emulsion likes to stick to the glass dish I use to
> keep emulsion at the coating temperature better after hardening a bit.

I find too viscous an emulsion is difficult to fix. I apply two coats of
runny emulsion.
I always harden in the stopbath, for which I use water and Ilford film
hardener. I've had a lot of trouble with lifting and frilling even with cold
baths.
>
>Kate Mahoney


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