Estes QCC Explorer Build Part 15, DIY Payload Section Coupler

Two holes are punched in the disks. The shock cord will be tied through these.

Now the disk can be glued in over the reinforcement ring.
The reinforcement ring prevents the disks from being pulled down or out.

The red coupler is 3" long. Mark the center at 1 1/2". The lower half got a coat of medium CA.
Leave the upper half of the coupler as is, no CA coat. The upper 1 1/2" will glue into the 8" payload section tube.

After the CA dries, sand smooth with 400 grit.

Round the ends of the coupler edge for easier insertion in both tubes.

All open tube ends got a coat of medium CA and smooth sanding.

Don't use CA on a tube end that will have something glued into it.