Soak in 2%-5% hydrochloric acid for at least 2-3 minutes (until
no
fizzing/bubbles to be precise) and rinse well later. You'll have
a
very nice paper for pt/pd and gumovers...
If you find HCl
objectionable you may also use dilute (as above)
acetic acid, or (as a
last resort) oxalic acid. Most printers
(including masters such as Dick
Arentz and Kerik Kouklis) use oxalic
with good results but I don't find
it well suited to the job since it
made a gritty paper for me. (I also
don't find calcium carbonate and
oxalic acid compatible because the
resulting salt is insoluble and
will remain in paper whereas HCl or
acetic acid will make soluble
calcium salts which will leave the paper +
HCl will dissolve small
bits of iron/metal in paper - if present - which
is detrimental to the
process.) Moreover, another cause why I prefer it
is the fact that HCl
is very very cheap and readily available
(concentrated/pure or already
diluted for cleaning/decalcification/pH
control purposes, many off the
shelf products) in my location (Turkey) -
may not be so to you.
Hope this
helps,
Loris.
2009/11/13 David Ashcraft <
david@davidashcraftgallery.com>:
This is a resend, I tried this around the
beginning of the week and it
doesn't appear to have gone trough so I'm trying
again. My apology if this
is redundant, I think I used a different from
address.
Greetings,
I need to order more paper for my pd/pt printing;
using Platine now coating
with the magic brush. Was wanting to try the
Fabriano Artistico HP Extra
White 300lb and was wondering if anybody is using
this or should I stay away
from it. I saw in Dick's book that it should
be acidified and if that is
still true, soaking or brushing, what works best
this year? I prefer the
thicker papers so any recommendations in this
direction is appreciated.
Thanks,
David