also, the dye did not bleed into the areas outside of where it was applied, which was kind of cool.
i semi-retract this statement.
the dye bleeds in a linear fashion, but, the drier the paintbrush is, the easier it is to control the bleeding.
here is what i tried with the cheapest brush i could find in my house this morning:
the dots were a challenge with the wet brush and the stiff plastic bristles didn't help either. the stippling was easy with the dry brush.
in regards to the goose feather oil, the dye does not seem to penetrate to the back of the feather. especially in the area where a normal fletch is extracted from.
i'm guessing one could get better results with a smaller paintbrush of better quality.