Take a chance
Don’t worry about messing up a few cars by weathering them,
every master modeler has some weathering jobs on cars that
didn’t turn out so well. Often the evidence is hidden on a back
siding, or the cars were sold or given away years ago. Most of
mine went to eBay.
Steady as she goes
Strive to keep the coat of weathering material as even as you
can. Avoid blotchy, haphazardly applied weathering by applying
a light even coat and then adding to it.
Three areas to weather
Car underbody, trucks and wheels
Kill the shine and dull any fake plastic-looking parts. Use dark
and dirty colors to simulate grease and grime.
20: This boxcar has a coat of chalk powder over acrylic
washes. The rust spots were painted yellow-orange
and then given a coat of Rustall over them to create a
rough texture.
20