Download the model files here:

https://dl.dropboxusercontent.com/u/31512672/Quad%...

The STL files for 3D printing are provided as well as Inventor 2014 files if you want to make any edits.

You'll also need various #4 machine screws and hardware like lock washers and nuts. I use acetone to glue some of the plastic pieces together.

You'll need to print these pieces:

2x Body

1x Bottom

4x Bottom_supports

4x Arm

4x Motor_mount

4x Arm_foot

Use acetone to glue the motor mounts to the arm pieces. Allow the arms to dry and flip them over. Glue a foot piece to each arm.

Glue the 4 bottom supports to the bottom piece. This bottom piece will hold the flight controller.

Attach the body pieces, arms and bottom together using machine screws. The motors are also attached with machine screws.

And that's how you make the frame! The frame design is not perfect, and I will likely make some revisions in the future. Feel free to leave a comment if you have any questions.