Weathering powder streaking colors

[railbuilderdave]

I recently purchased a set of the A.I.M. powders and I noticed that they have some small chunks of color in them that streak when applying them to the surfaces.  I really noticed this last night when I was working with the grimy black and it had a “yellow” chunk that made streaks and boy you could see the yellow on the black.  I wanted to know if others have experienced this with the A.I.M. powders or any of the other powders?
Dave

[pfs]

Sometimes the 'accidental' effects are the best.

I didn’t have any contamination in my AIM set.

Are you 'dippin' your applicator directly into the container(s)?

Also what are you using to apply?

(You will get a lot more info on this from your MTW post)

[CSX_road_slug]

I don't know Dave, I'm still using the Bragdon* brand of powders that I bought at my LHS.  Never had an experience like you described.  Maybe I'll head over to MTW and see what those guys have to say about it...

(* I understand that Rich [of MTW] doesn't like Bragdon and promotes AIM, but I want to use up all my existing stock before I order any AIM powders.)

[mmundy]

I have just recently noticed that using a plastic-bristle paint brush, I get streaks, like chalk marks on the chalk-board.  While using natural bristles, I do not get this effect.