What CF sheet to use for 1/8 buggy chassis????

[pb4ugo]

It needs to be more rigid than just sheet metal. A nicely bent piece of 1/8" minimum (for wet layup, thicker for vacuum bagging) aluminum will do the trick.

At that point of expense, assuming you're trying to do it cheaply, cut and sanded MDF would serve you better.

Or you can just try the heat gun