The most daunting task in building resin stock cars is cleaning the flash from between the slats on the sides, doors, and sometimes the ends. For the 15 car build that task is now over. And it went better than I had hoped.
It wound up taking about 40 minutes a car over 2 days to clean the 15 sets of castings. And it generated that largest pile of bits of flash and dust I've seen here.
One does need to pay attention. There's a very real tactile experience involved. As the flash starts to get to the thinness desired, you can feel the difference in the resistance through your fingertips. The big take away for this job is to not "zone out" when sanding. The hours of sanding in a circular motion can lull you into a semi-comatose state if you're not careful.
Another important aspect of tackling a job this big, is to be organized.
Next step, assemble the bodies and roofs so I can paint the interiors.