Robert E. Barber

Basic mold making.

Part 2: Keep it clean and organized.

If you always wanted a custom exhaust for your homebuilt but were too afraid to ask, consider this alternative where you build the model and then send it in to the shop for professional fabrication. Author Bret Davenport found the Aircraft Exhaust four-into-one collector system for his Pitts S-1S more than satisfactory.