Build the boss, shaft, and bolt-ring stack
Using only Autodesk Fusion's visible user interface, complete the CAD task below. Work in the root component and use millimetres. Do not use scripts, add-ins, the Fusion API, a terminal, or another CAD program.
This is a multi-stage build with 3 stages completed in one episode. Work strictly in the document that is already open: do not create a new document and do not open or import any file—work done in a different document scores zero. Complete the stages in order; each stage builds on the result of the previous one. Do not add solid features beyond those specified.
Required result
Stage 1 of 3
Starting from the supplied body after its 35 mm, −15° tapered extension, create a fully constrained sketch on the exposed terminal face. Draw exactly one Ø69 mm circle concentric with the main X axis and coincident with the sketch origin. Finish the sketch, then extrude the circle 10 mm outward in the positive X direction, one-sided, with 0° taper and Join. This stage adds exactly one new sketch and one new extrusion feature, keeping a single solid body.
Stage 2 of 3
On the Ø69 mm boss from the previous stage, create a fully constrained sketch on its exposed terminal face. Draw exactly one Ø62 mm circle concentric with the main X axis and coincident with the sketch origin. Finish the sketch, then extrude the circular profile 30 mm outward in the positive X direction, one-sided, with 0° taper and Join. This stage adds exactly one new sketch and one new extrusion feature, keeping a single solid body.
Stage 3 of 3
On the exposed Ø62 mm terminal face from the previous stage, create a fully constrained sketch on that face. On the positive horizontal sketch axis, place the center of a Ø5 mm circle exactly 27 mm from the shaft center. Offset that circle inward by 1 mm using a −1 mm sketch offset, producing a concentric Ø3 mm circle. Finish the sketch, then select only the annulus between Ø3 mm and Ø5 mm and extrude it 1 mm outward in the positive X direction with a one-sided 0° Join extrusion. Do not extrude the inner disk and do not create a pattern. This stage adds exactly one new sketch and one new extrusion feature, keeping a single solid body.
End state across all stages: exactly 3 new sketches, 3 new extrusion or cut features, and one solid body.
Completion requirements
Finish the sketch and feature operations, leave the completed design open in Fusion, and do not add geometry or features not requested above. Do not use Save or Save As. Do not open or import any external CAD file, including another task seed or answer. The environment exports the open design automatically; use the finish action when the task is complete.