Had a chance to work on paper mock-ups for the "business end" of the ATSF slip. Initial paper models were a bit too small, and didn't have enough clearance, but after working with the "full scale" drawings and my NMRA gauge, I think I have the right "look":
Spent some time learning how to vaporize laser board at the TechShop— it is going to take a few more hours to learn what I can get away with. Here is a look at what happens when you try and cut things that are a bit too small:
Planning on going back for more learning/punishment next weekend to dial in the settings and tweak the CAD a bit.