This rocket is a downscale of Derrick Deville's QU8K project. Derrick flew his QU8K rocket at Black Rock dessert to an astonishing 121,000 ft as his Carmack Prize entry.

http://ddeville.com/derek/Qu8k.html

Take the full ride along here:

https://www.youtube.com/watch?v=rvDqoxMUroA

Details on the Carmack Prize:

https://www.space.com/13245-amateur-rocket-qu8k-carmack-prize.html

Here are some hints for this project:

Print slow for the cone and fincan. The coupler, baffle and centering rings are internal to the rocket and can be printed a little faster.

The 24mm motor mount is mounted flush to the base of fincan. Use JB weld where the motor mount will adhere to fancan that will be in contact with most of the heat generated by the rocket motor.

All other components can be bonded with 5-minute epoxy for strength between the PETG and the cardboard tube.

Without paint or shock cord or parachute, the rocket components weigh 5.5ounces. With a fast burn E or F-class motor, this rocket can really burn up the skies.

The motor retainer was designed with the Aerotech 24/40 in mind, but due to the light weight of the printed parts, this rocket can also launch on "The Mighty D Motor" from Estes. An adapter and motor block will need to be adapted to use Estes 24mm motors.

To do the small QU8K rocket justice, just hammer it on the more powerful Aertech reloads.

It is unclear of this posting whether or not the retainer will handle Cessaroni Technology Inc (CTI) 24mm motors.

Edit: 01-29-2019 - Added .25 motor retainer for use with the Aerotech 24/60 RMS case.

Edit: 02-03-2019 - Link to build thread on The Rocketry Forum:

https://www.rocketryforum.com/threads/quake-qu8k-50-3d-print-build.150756/