3D Exercise 50

Exercise 50

In this CAD tutorial we'll use the features: 

1. Surface Loft

Definition: Creates a smooth, transitional shape between two or more sketch profiles or planar faces. How it works: Think of it as stretching a fabric skin over a series of ribs. You select your starting profile, your ending profile, and any guide rails to control the shape in between. Best for: Complex, organic shapes where the geometry changes gradually from one end to the other (e.g., a boat hull or a vacuum cleaner handle).

2. Surface Patch

Definition: Creates a surface to close an open loop or fill a gap. How it works: You select a closed boundary (a chain of edges or a sketch loop). The tool generates a "cap" to fill that area. Key Feature: You can set the continuity to "Tangent" or "Curvature," allowing the patch to dome or blend seamlessly into the surrounding surfaces rather than just sitting flat. Best for: Closing holes in imported geometry or capping the end of a complex organic shape.

3. Surface Revolve

Definition: Creates a surface by rotating a sketch profile or planar face around a selected axis. How it works: Similar to the Solid Revolve, but the result is a hollow shell rather than a solid block. You need a profile and a center axis (like a construction line or an edge). Best for: Creating symmetrical, hollow, or curved objects like bottles, vases, or domes.

4. Surface Stitch

Definition: The "glue" of surface modeling. It joins separate surface bodies together to form a single surface body. The "Magic" Moment: If you stitch surfaces together and they form a completely closed, watertight volume (no gaps), Fusion 360 will automatically convert the result into a Solid Body. Best for: Combining various patches and lofts into a single usable object.

5. Surface Thicken

Definition: Adds material thickness to a surface face to convert it into a Solid Body. How it works: Since surfaces have zero thickness, you cannot 3D print or manufacture them as-is. Thicken offsets the surface wall by a specific distance (e.g., 2mm) to give it volume. Best for: Turning a complex aesthetic "skin" into a manufacturable plastic part or shell.

6. Coil

Definition: A parametric tool that creates a solid primitive in the shape of a helix or spiral. How it works: You specify the plane, the diameter, and parameters like revolution, height, and section size (circle, square, triangle). Best for: Creating springs, internal threads that aren't standard ISO/ANSI, or cutting helical grooves into a cylinder.

7. Sketch Project (Project to Surface/Plane)

Definition: Takes geometry that exists elsewhere in 3D space (bodies, edges, silhouettes) and "casts a shadow" of it onto your current active sketch plane. How it works: Press P on your keyboard (shortcut). This locks the referenced geometry into your sketch. If the original 3D body changes, your projected sketch updates automatically. Best for: Referencing the edge of a 3D object so you can build a new feature that matches it perfectly without redrawing.

All dimensions are in mm/g/s/ISO  

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3D Sketch

Sketch 50

Exercise 50 - 3D practice drawing for all CAD software ( AutoCAD, SolidWorks, 3DS Max, Autodesk Inventor, Fusion 360, CATIA, Creo Parametric, SolidEdge etc.)

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Tutorial In Autodesk Fusion: https://youtu.be/eN5rcQGjVgc