Spool Rocket Build Part 6 Lug Hole Drilling

Look closely at the center hole on the bottom CD. You can see where the notch was cut for the engine hook movement.

The launch rod hole was started by spinning the tip of my hobby knife on the disk mark.
After drilling through the other side, the hole diameter was widened with a small diamond file.



Here's the bottom disk after notching for the engine hook and drilling for the launch rod.

It's been set on top of the upper disk to mark the location for the launch rod hole.
The upper CD was then drilled.