I too use Camels hair brushes, I should say brush since the one I use is over 20 years old.
My new one is still in the package.
The CA to help keep the brush from shedding is a great idea.
Before CA I'd dip the brush in straight clear dope. Then wipe the excess, and let the brush stand on the handle end till the dope was dry.
This would seal the hairs into the metal frame.
I haven't had any drip problems with the camels hair brushes. I super thin the first coats of dope, and hold the open structure so the silk is vertical.
Then give the silk a few coats of dope.
Thai silk is a good place to get silk.
Here is another one.
http://www.dharmatrading.com/html/en...bric_silk.html
Looks like the same stuff as Thai Silk offers.
I have noticed the silk from there doesn't shrink neary as much as the old silks used to.
The dope on this wing was applied with a brush.
Just clear over dyed silk.