----- Original Message -----
Sent: Saturday, July 04, 2009 1:36
Subject: a few notes on my first few gum
First of all, thanks for all the suggestions and
comments on my first tricolor gum. It was definitely a good learning
experience for me.
There are a few things that I noticed while working that
I hope to clear up and solve.
One, is the use of hake brushes. I've been using the
inexpensive variety found at the typical art store, about $2-4 each. Coating
is difficult with these because there is absolutely no spring to them, they
just go limp and the hair goes every which way even brushing lightly. I know
how to coat pt/pd and am always successful when coating that emulsion. Gum,
although more viscous than pt/pd should still flow on quite
I know that the gum coating should be on the thin side,
and my guess is that for a 4x5 print I should be using approx .5 - .75 ml of
solution, but those hake brushes are horrible, very hard to get an even
coating, at least consistently for me.
I'm very tempted to try a synthetic watercolor wash
brush as I use for pt/pd (DaVinci Cosmotop). Expensive, yes, but the perfect
brush for pt/pd. Just a dip in distilled water, a shake or two, and it's good
to go. I bet it would really make for a nice smooth, even and just-right gum
coating using the same technique.
Here's something else...I notice that Sam Wang, in his
gum article on Unblinking Eye, brushes on his gum coating and
doesn't use another dry brush to smooth it. I'm thinking of
trying this as well, as long as I can get a really smooth, even coat down with
a good brush.
One of the things I noticed was that while burnishing my
coating with a dry brush, it started getting very grainy
looking. I'm thinking that I could keep the smoothness if I just brush on
once, nice and thin, and don't use another brush to burnish and
Today was a disaster...I started on another tricolor
print and upped the ratio of pigment to gum, to get darker colors and it all
devolved from there. It happens, I'm experimenting...this has all been
seat-of-my-pants stuff but now I need to do a few test strips with a
consistent pigment/gum ratio to get a good starting point and figure out the
smooth coat/non-grainy stuff, too.
Comments and criticisms are most welcome. I'll report
back, if y'all don't mind, on my progress and findings...
Happy 4th to everyone here in the US and much thanks to
all who weighed in from around the globe as well...