Spool Rocket Build Part 3 Engine Mount

So you know what is upcoming, here's the final motor mount assembly looks like before gluing to the CDs.
Go ahead and add a wrap of tape over the engine hook to keep it in place.

For contrast, I used a marker on the rings before gluing them in place.
A black and white striped motor mount might look better against the silver CDs.
Notice the centering rings are set about 1/8" from the ends of the tube.
The ends of the motor mount tube go into the enlarged CD center holes.

The flat sides of the centering rings give a gluing surface for the epoxy.
Go ahead and glue the centering rings so 1/8" of the motor mount tube is exposed on both ends.
Apply a fillet to the inside joints only! No glue fillet goes on the outside where the motor mount tube is exposed.
This way the gluing surfaces (flat outside of the centering rings) will remain sharp and square.