four-leaf clover 3d model

Create a hollow extruded tube with a 4-leaf clover (four-lobed) cross-section, based on a mechanical drawing reference. The clover geometry is defined by four identical lobes made from tangent circular arcs, not sinusoidal or star-shaped curves. Each outer lobe is generated using arc radius R = 5.0 mm, as per the drawing reference. Dimensions: Maximum outer diameter across lobes: Ø22.6 mm Inner clover reference spans: 13.13 mm, 15.93 mm, 17.13 mm, used to shape the internal profile Uniform wall thickness, matching the thickness visible in the reference image Tube length: 50 mm Modeling requirements: Solid body (not surface) Smooth, continuous profile with tangency between arcs Inner profile must be an inward offset of the outer clover to keep constant thickness Open tube (no end caps) Engineering-accurate geometry, not decorative Output: Export as STEP (.stp) or OBJ (.obj) Units: millimeters Topology suitable for forming / FEM simulation