SLS model rocket configured for D size Estes model rocket engine. I'll post a video of me shooting it off when the weather gets a bit warmer. The only thing required for this project other than the items you can 3D print is a 38mm x 212mm cardboard tube, but you can size the pieces to fit any tube you have. If you have any suggestions for the project be sure to leave a comment or message me directly. Hope you like it!