After more than 50 years in the modeling hobby, I am finally thinking the an Air Brush might be handy for weathering. I have used chalks and washes forever to weather and they have worked out great for me. Lately, I have watched some videos on weathering and of course the guy used and air brush and I could see where they provide a very definite help, when doing very light weathering. It seems a little late in my modeling career to venture into this aspect of model finishing, as I am turning 70. I'd like to hear what folks have to say and recommend for this. Thanks in advance!