RE: Liquid Emulsion-Coating Problems

From: Rocky Boudreaux ^lt;[email protected]>
Date: 09/26/04-10:20:37 AM Z
Message-id: <>

Well I guess there are more ways then one to do things. I do
Platinum/Palladium, Cyanotype, I've done Albumen, Salt and probably a few I

Three things:
1. I use the Edwards Rod with no problems. I converted after dropping a B&S
rod on the floor before coating a single sheet of paper. Bought a second
glass rod and used it with no problems for a while then retried the dropping
test and sure enough it too broke. Switched to the Edwards and it's been
several years. They both work, kind of like chocolate and vanilla ice cream,
take your choice.
2. You may wish to try food coloring in your coating mixture. I do this with
my B&W Silver chemistry so when I am interrupted by a phone call during the
process I know where I left off. Never tried it on liquid emulsion.
3. Ahh, the "magic brush". People swear by them. I just buy an expensive
nylon "water color wash brush". Width depends on size prints I will make.
The key is the diameter of the bristles, softness and the thickness of the
brush itself. Nylon doesn't absorb the fluid and spreading the mixture is
much like a watercolor wash application. Use it very wet. Cost is usually 2
or 3 dollars. If it doesn't work for you then pop for the more expensive
"magic brush". Works fine for me, and yes I have tried a friends "magic

Good luck maybe this will add to the discussion.

Houston, TX

-----Original Message-----
From: Don Bryant []
Sent: Sunday, September 26, 2004 9:15 AM
Subject: RE: Liquid Emulsion-Coating Problems


> Also, I am experimenting with a home made coating rod made of PVC. Costs
less than a dollar, and it seems to be OK. I textured the surface a little
and am getting reasonable coating wit Pd/Pt solution. Has anyone else tried

Yes, Edwards Engineered Products ( makes
'plastic' coating rods, but IMO don't waste your time with these as glass
rods work much better. The EE rods never seemed to coat as well as glass
does, they have a lot of drag when compared to glass rods and don't coat
smoothly. I have a large sheet of plate glass that I place my paper on for
coating which provides a flat smooth support. I don't think a textured rod
surface will give best results.

You may also want to consider using the magic brush, a.k.a., Richeson 9010
synthetic hair brush or something similar. A 2 inch flat can be purchased
from Jerry's Artarama
( for about

Good luck,

Don Bryant
Received on Sun Sep 26 10:23:13 2004

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