Role: You are a product designer using Fusion 360 to automate woodworking joinery.

Objective: Create a Python script to generate parametric box joints (finger joints) between two wooden boards.

Inputs:

• Board thickness (e.g., 12mm)
• Joint length (e.g., 150mm)
• Number of fingers (e.g., 6)

Constraints:

• Ensure perfect alignment and alternating pattern
• Output sketch for laser-cutting or CNC milling

Deliverables:

• Annotated script
• Optional export as DXF or SVG
• Diagram of the joint profile