Coil Challenge 🔥 | 90% Get This Wrong (Autodesk Fusion 360)

3D Sketch : https://www.3dmechanism.com/post/3d-e...

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In this CAD tutorial we'll use the features: 
1. Revolve
Definition: Creates a 3D cylinder by spinning a profile around an axis. How it works: You sketch half of the piston rod and the shock body. Fusion spins it 360° to create the main mechanical cylinder. Best for: Creating the central damper body and the piston rod.

2. Coil
Definition: Creates a helical spring or thread. How it works:

The Magic: You don't need to sweep a circle along a spiral path manually. You just select a plane, draw the diameter of the spring, and define the Pitch (gap between coils) and Section Size (thickness of the wire).

The Shape: It automatically builds the perfect 3D spring geometry. Best for: The heavy-duty suspension spring that wraps around the shock.

3. Offset Plane (Construction)
Definition: Creates a sketching canvas at a specific height. How it works:

The Problem: The spring (Coil) shouldn't touch the shock body directly; it sits on a "Spring Perch" or plate.

The Solution: You use an Offset Plane to define exactly where the spring starts and ends along the length of the shock. Best for: Setting the start and end points of the Coil.

4. Extrude
Definition: Creates linear geometry. How it works:

Join: Use it to create the "Eyelet" mounting block at the bottom of the shock.

Cut: Use it to trim the ends of the spring flat (ground ends) so it sits flush on the plate. Best for: The square/flat mounting points at the ends of the round shock.

5. Hole
Definition: Creates precise mounting holes. How it works: Drills the bolt hole through the mounting eyelets. Best for: The connection points where the shock bolts to the car's suspension arms.

6. Circular Pattern
Definition: Duplicates features around a center axis. How it works:

Detailing: If you want to add "Adjustable Collars" (the ring that tightens the spring) with notches for a wrench, you model one notch and Circular Pattern it around the ring. Best for: Creating the grip texture or tool slots on the adjustment rings.


All dimensions are in mm/g/s/ISO
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