Dimensioned CAD Sketches

Dimensioned CAD Sketches

You will combine geometric constraints with dimensions to create a precise sketch from engineering documentation. The final sketch must be both fully constrained and dimensionally correct.

Step-by-Step Instructions

1. Read the technical drawing before sketching: Identify the overall size, feature locations, hole sizes, radii/diameters, and any angular information before opening Sketch Dimension.
2. Create the geometry: Draw the required lines, arcs, circles, and other profiles. Focus first on the correct topology and approximate arrangement.
3. Apply geometric relationships: Add constraints such as horizontal, vertical, tangent, concentric, symmetry, and equal before entering dimensions.
4. Add dimensions strategically: Use linear, angular, radius, and diameter dimensions to control size and location. Dimension from stable references such as the origin or centerlines when appropriate.
5. Resolve over-constraint warnings: If Fusion reports that a dimension is redundant or over-constraining the sketch, stop and identify which existing relationship already controls that geometry. Do not simply delete random constraints.
6. Verify the final sketch: Compare every critical dimension against the drawing. A black sketch is not automatically correct; it must also match the required geometry and dimensions.

Before You Submit

• All required dimensions match the drawing.
• No over-constraint warnings remain.
• The sketch is fully constrained without unnecessary Fix constraints.
• Dimensions are readable and not duplicated.