This is a rocket that is designed to use a estats F50-6 rocket motor (29mm diameter, 98mm length), but can be powered with a homemade sugar rocket engine. Also if you have any suggestions please let me know in the comments.
Print all the parts straight up and down especially the nose cone.
Once the prints are done take a craft knife and remove all the supports. Then grab a piece of sandpaper and smooth everything down, the smoother everything is the higher it will fly. Grab a hot glue gun and a launch rod, add a little hot glue to the smaller ring of the rocket upper body and push it into the lower body of the rocket and line up the two pieces by inserting the launch rod into the launch lug, let it cool for 5 to 10 minutes. Next add a parachutes (www.youtube.com/watch?v=CISZ7RUye5w) by tying an elastic cord to the inside of the upper body and to the ring in the nose cone.
I used open Rockets to design the shape and size of the rocket to get a maximum altitude. I than opened openScad to get the shape of the nose cone and exported it as a .obj file. finally i went into Autodesk fusion 360 and fully designed the entire rocket.