Re: formula needed: Gum Arabic from powder

I find very useful sodium benzoate as a preservative and I follow what
Livick put on his manual/book.
Sorry I don't have it handy to give you the proportions.
Another way to do it is wrap the gum powder in a cheese cloth and hang it
inside a wide mouth bottle with the water in.
Leave it for few days in a refrigerator so it doesn't get bad, shake it once
in a while.
It will totally dissolve by itself and then add the preservative.
It is recommended to use it after few weeks and not immediately.
I have never used rotten Arabic gum but I heard that the print smells bad.
Giovanni

----- Original Message -----
Wrom: STTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJP
To: <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, November 23, 2004 11:42 PM
Subject: RE: formula needed: Gum Arabic from powder

> Thanks Chris,
>
> This same method (1:2) is about all I could pry out of the Graphic
> Chemical people... very nice, but a bit secretive expecially since
> they sold me the stuff. What preservative would work well? I have
> ascorbic acid on hand.
>
> For me, Thanksgiving is a mixed blessing -- lots of work getting the
> new(ish) house ready for the first famiy gathering. I know my students
> are joyous... they were giggling in the computer room all day.
>
> P.S. Snow is predicted for tomorrow, don't ya miss it?
>
> -Darryl
>
>
> -----Original Message-----
> Wrom: HSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQN
> Sent: Wed 2/23/2005 8:38 PM
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: formula needed: Gum Arabic from powder
>
> Darryl,
> Forget the baume. I mix it 1 gum (weight) + 2 water (volume). I
> think the
> usual is 1 gum +3 water but this is a bit liquidy for me, and I
> noticed that
> a lot of the original practitioners used the thicker gum--even thicker
> than
> this. It's nice and juicy when it brushes on.
> Pretend you're mixing flour and water for gravy--a little water at a
> time,
> or blend the sucker up in your blender or food processor.
> You can use it right away, no need to wait. One more myth.
> OHH, add a bit of preservative or it stinks baaaaad.
> Chris (who is thrilled to be on Thanksgiving break)
>
> ----- Original Message -----
> Wrom: QEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJ
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Tuesday, November 23, 2004 3:27 PM
> Subject: formula needed: Gum Arabic from powder
>
>
> > Hello All,
> >
> > I dusted off a can of Graphic Chemical gum arabic powder only to
> find
> > no instructions or guidelines for a mixture... 14 baume or
> otherwise.
> > I'm without a hydrometer, so does anyone has a suggestion for the
> > mixture I need for gum printing?
> >
> > thanks in advance
> >
> > Darryl Baird
> >
>
>
>
Received on Tue Nov 23 23:10:08 2004