U of S | Mailing List Archive | alt-photo-process-l | RE: Liquid Emulsion Questions

RE: Liquid Emulsion Questions

  • To: alt-photo-process-l@usask.ca
  • Subject: RE: Liquid Emulsion Questions
  • From: Robert <rc3@flash.net>
  • Date: Mon, 25 Sep 2006 18:52:07 -0700
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I would suggest you use clear acrylic jesso. It will give tooth for your
emulsion to stick to. I print gum on birch plywood. The 1.4 may get a slight
warp after three to four soakings. 1/2 will not warp but is heavy. I frame
my work on wood when it on 1/4 inch wood and that makes it flush again. The
1/2 I do not frame but paint the edges to mach the print.

Best Regards,

-----Original Message-----
From: Camden Hardy [mailto:camden@hardyphotography.net] 
Sent: Sunday, September 24, 2006 10:18 AM
To: alt-photo-process-l@usask.ca
Subject: Re: Liquid Emulsion Questions

Polyurethane varnish also works pretty well with liquid emulsion.  As John
mentioned, I would recommend coating the entire board to completely seal
it from the chemistry...that way the wood won't warp.

Camden Hardy


On Sun, September 24, 2006 10:20 am, John Cremati wrote:
>           I have coated wood with  thick layers of a diazo  emulsion in
> the
> past....... What I did was to apply numerous coats of a  sandable  sanding
> sealer to the wood sealing it totally....... I only needed it done on the
> front but from what I can see in your case, you would have to do the
> entire
> piece.........  I imagine lacquer or shellac would work as well.... The
> soak
> time frame may be limited though depending what you use........... If you
> do
> not do this you will get sever warpage  beginning almost immediately even
> if
> you just coat the surface......
>        Is it possible that you just coat  only the front  surface using a
> brush on method and then create a dam around the peice to devlelope , fix
> and rinse.....
>      Also You could build a  recirculating flood system by just drilling
> small holes over  a length of PVC, caping it at one end and then run a
> tube
> to a small pump and well in some sort of tray set up.......This would
> minimize your chemicals and you could just tape of the back using visquine
> or cut a piece of plastic plexi and tape that in place......
> You may also want to look into Sandy King' s method of coating paper for
> Carbon Printing .
> John Cremati