Dirty water weathering

[Catt]

I use a lot of acylic paints in my modeling.Since they are water based I clean my brushes with water.I discovered a long time ago that the dirty water from this brush cleaning made for a great weathering wash.I keep several different bottles with different colours in them ranging from white to brown to dark grays. This CV boxcar and the two flats in the lower picture are weathered this way.The decks of the flat cars also have some paint weathering applied too.





These are Z scale by the way.The neat thing about this kind of weathering is if you don't like it,it can be washed off if done fairly soon after it is dry.

This is also the method I use to weather my N and HO rolling stock. It' cheap