U of S | Mailing List Archive | alt-photo-process-l | Re: Was Re: question on sizing, now fish eyes

Re: Was Re: question on sizing, now fish eyes

  • To: alt-photo-process-l@usask.ca
  • Subject: Re: Was Re: question on sizing, now fish eyes
  • From: Keith Gerling <keith.gerling@gmail.com>
  • Date: Tue, 09 Sep 2008 08:59:29 -0500
  • Comments: "alt-photo-process mailing list"
  • Delivered-to: alt-photo-process-l-archive@www.usask.ca
  • Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com;s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;bh=1cYgKboWTSSHbvrMvpY3UG9sbHrB6Nw9uuq3EBGgqnk=;b=gKAebE/W0f4BiC2sAy/x+qVtK2j44qCfCs3HKlAqh4g8RvuxixgDwFzVpAJtyMBcGoP2xQItDq7ShevUulQBz0e8HvsIY0IoJNHWpmSWUAd8Qgq8QtXgmowJW/mZyzlCUtaN3zH0giFO91PEtzzmA/mfd4/eTNJPwHMRB9cz7S4=
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition :references;b=S/lVg7b1D+Ql068/eViBLfkpkEE9+EOfFEcXeWz1FWl0hCOlzSp882wVRPJVafvt6qpqg4i7NNRp4gUJz8bFWC06FnR/dvDIRDscneHs1ZNW5CI8iNOOB8XcYgsrH+zPqUcFuJDjU3SnmUH+E5heCrgP1PGuKZWEKDRH2zwNSqg=
  • In-reply-to: <2612E8A1DFCC44E7A71AA1959E59B487@DC5YX7B1>
  • List-id: alt-photo-process mailing list <alt-photo-process-l@sask.usask.ca>
  • References: <380-22008918171320660@M2W037.mail2web.com><2612E8A1DFCC44E7A71AA1959E59B487@DC5YX7B1>
  • Reply-to: alt-photo-process-l@usask.ca

I only add the defoamer to the gelatin.  My gum-pigment-sensitizer mix
stays pretty much constant, and is pretty dependable, so I attribute
the inconsistencies that do appear to whatever is underneath the gum.
Whether the substrate is metal, glass or paper, gessoed or not, I
usually end up with a coating of gelatin before I apply the gum
emulsion.  While my technique is often loose and sloppy, it is here,
with the application of the gelatin, that I am most likely to get
burned., so it is here that I slow down and make my very best effort
to be consistent and methodical.  Those things you call fish-eyes?  I
always assumed they were caused by air bubbles in the gelatin and I
get them occasionally with paper, but they are very common and are a
royal pain when I work with gessoed surfaces.  The defoamer helps a

On Tue, Sep 9, 2008 at 8:24 AM, Christina Z. Anderson
<zphoto@montana.net> wrote:
> Hi Kerik (and Keith),
> Your email made me realize that I might have misinterpreted DJ's original
> post and Keith's below, so a need to clarify:
> I'm talking fisheyes in a gum/pigment mix, not the gelatin sizing.  I think
> that DJ was having fisheyes in his gum coating on top of a gelatin size
> hardened with glyoxal.  But you and Keith are talking additions to sizing
> (or are you, Kerik?) to make it smoother, less bubbly, etc.? I do use your
> method of Everclear in my gelatin, about 20ml per liter, Kerik. So I guess
> my question is are you two adding these things to the gelatin sizing only or
> the gum coating as well?
> The reason I ask is this: as is always the case with gum, troubleshooting
> explanations will contradict.  I have a host of reasons for fisheyes.
> Insufficient gum in relation to pigment, coating mix too "limpid" or as we
> say thin, yet another says to increase the sensitizer in the mix because it
> is too much sizing for amount of gum used, air bells, medium in some
> watercolors, and those "globules" that are visible under the microscope one
> author says.  If Everclear or Defoamer helps with fisheyes that might say
> something different even than this.
> Chris
> __________________
> Christina Z. Anderson
> http://christinaZanderson.com/
> __________________
> ----- Original Message ----- From: <kerik@kerik.com>
> To: <alt-photo-process-l@usask.ca>
> Sent: Monday, September 08, 2008 11:13 AM
> Subject: Re: question on sizing
> A few drops of Everclear (ethanol) works well, too.
> Kerik
> www.kerik.com
> Original Message:
> -----------------
> From: Keith Gerling keith.gerling@gmail.com
> Date: Mon, 08 Sep 2008 11:45:26 -0500
> To: alt-photo-process-l@usask.ca
> Subject: Re: question on sizing
> I've had no problem with fish-eyes since I started adding a drop or
> two of Kremer Defoamer (kremer # 78600) to my gelatin.  Judy turned me
> on to this magic elixir many years ago and it seems to make life
> easier.
> Keith
> --------------------------------------------------------------------
> mail2web.com - Microsoft(R) Exchange solutions from a leading provider -
> http://link.mail2web.com/Business/Exchange