Tapered Cylinder 3D Print

I need a file for a cylinder 3D printed on a CR-10 smart pro 3d printer that I own Specifications: - Top diameter: 4” OD, down 8” then taper begins, down to 1”OD then down another 1” to create a nipple - Height: 12 (roughly) - Bottom diameter: 1 inch - Wall thickness: 1/8 inch, uniform Material: PLA plastic Ideal skills and experience: - Proficiency in 3D modeling - Experience with PLA 3D printing - Attention to detail for precise dimensions