Radial Line Pattern Development

21 Pyramid

Any number of sides can be developed with this same method.
  1. Draw a plan and elevation view. When a pyramid is being developed, the plan view must have a point on the X axis to to give it a true length in the elevation view.
  2. Locate a radius point where you want to develop the pattern.
  3. With your compass, take the slant height from the elevation view and swing an arc (stretch-out arc).
  4. Establish a starting point for the pattern and draw a line back to the radius point. The starting point can be anywhere along the arc.
  5. Set your compass to a length equal to one side of the base. From your starting point, swing it as many times as sides along the stretch-out arc.
  6. Connect all the points back to the radius point to complete the pattern.



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Pattern Development: Sheet Metal Level 1 Copyright © 2021 by Brian Coey is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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