This kit includes all the bits required to turn a cardboard tube into a real rocket. Well except for the actual rocket fuel.

There is a fair amount of variation in the size and quality of paper tubes. The nose cone and tail assembly are based around a 40mm diameter tube. I ended up using these tubes from Michael's Craft Store. But with a bit of luck, glue, or tweaking the scaling in your slicer toilet paper or paper towel roll tubes should work as well.

I would use PETG over PLA. PETG is less brittle and is more likely to survive landing. On the topic of survival, these seem to survive being launched on a c motor without issue so long as the parachute (or streamer) deploys properly and the rocket doesn't find a tree on the way down.

The random calculator I found on the internet has the following flight predictions:

• A8 3.5 meter (11ft) peak altitude
• B6 50 meter (175ft) peak altitude
• C6-5 125 meter (400ft) peak altitude

I have only flown this rocket on C motors, as they are the only size I have on hand. I did not measure the maximum altitude, but it seemed plenty high and roughly inline with the internet's predictions. I would not fly this rocket on an A motor for obvious reasons.

I recommend the following print settings:

• Nose cone - 4 perimeters and 5% infill. Rockets are more stable in flight with more weight higher up.
• Tail assembly - 2 or 3 perimeters and 5% infill. The goal here is strong and light.
• Whatever settings you like for the other parts, the specifics are inconsequential.

You will need the following for assembly:

• CA glue.
• 2x M3 screws between 6 and 20mm. These hold on the engine retainer
• 16inches (or 40cm) of 3/16inch shock cord. This gets glued into the hole in the nose cone and to the inside of the body of the rocket.
• A parachute or streamer. Tie this onto the shock cord to control the speed of decent. I used a 3inch wide by 36inch long piece of painters drop cloth.
• An 18mm diameter rocket engine
• Wading as not to burn up your parachute
• A standard Estes launchpad

Assembly itself is straight forwards and should be self explanatory, but feel free to message me if you have questions.

Update 4/11/2024: I added a single piece guide. The pair of smaller ones works, but they are a bit finicky to get aligned and have minimal surface contact to glue to the body tube. This one piece version is a bit more robust.