Thingiverse
This fits well over a standard 2 Liter Bottle. Made it for my classes rocket building challenge. Print the fins upside down so that they fit on the bed. It doesn't really need supports, but you may want to add them to the fins. Keep infill low since you want to keep it lightweight.
Direct link to the original creator's page
Thingiverse
Thingiverse
Cults3D
3DExport
Thingiverse
Thingiverse
Thingiverse
Thingiverse
Click the "View on Thingiverse" button above to visit the original model page on Thingiverse. You can download the STL file directly from the creator's page for free.
This model is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on Thingiverse. Some creators accept tips or donations.
Check the license (see original page) on the original Thingiverse page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.