Wildcatfootball:
Do you already have the Talgo coaches? If you do, it's a simple matter of building the aerodynamic fairing out of .020" sheet styrene.
I would:
- Make cross-section internal bracing panels out of .060" styrene to help the exterior keep its shape.
- Cut external panels out of .020" styrene, and fit it over the internal bracing frame.
- Once you are satisfied with the fit, glue it all together.
- Fill in voids with body putty (Squadron Green or Testors Contour Putty), let dry, then sand smooth with sand paper, from large grit down to wet fine grit for a smooth finish. While you are at it, sand the corners round.
- Test fit with the Talgo coach. If it looks nice, glue it on, fill in voids with putty, sand the joints down, paint it up, and voila!
Scratchbuilding smooth structures with sheet styrene is very easy. The trick is all in the internal bracing (to help it hold its shape) and sanding things smooth to the right contour. I'm sure you will do fine. :thumb:
Hope this helps.