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Drawing A Trefoil

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Drawing a trefoil - a decorative element typical of Gothic architecture

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Drawing A Trefoil

  1. 1. Drawing a trefoil _ Stonemasonry technical skills at SkillsTech Australia
  2. 2. <ul><li>Method </li></ul><ul><li>Construct an equilateral triangle inside a circle and then draw concentric circles from the points of this triangle. </li></ul><ul><li>Draw concentric circles around these circles from the original centre. </li></ul><ul><li>Draw intersecting arcs from the centre point and the three triangle points. </li></ul>Trefoil construction
  3. 3. Step 1: Draw a vertical line and a horizontal line intersecting at point A in the centre of the page
  4. 4. Step 2: Centre compasses at A and draw a circle radius 50mm
  5. 5. Step 3: Keeping the same radius, centre compasses where the circle crosses the vertical line at B and step off points C D E F G around the circle. Check for accuracy- the compasses should step off six times exactly
  6. 6. Step 4: Join the intersection points CF and DG through centre A
  7. 7. Step 5: Keeping the same radius, draw circles centred at each point B D and F, intersecting at points C E and G
  8. 8. Step 6: From centre A, draw circles around the previous circles at radius 100mm and radius 110mm
  9. 9. Step 7: Set compasses to radius 55mm and draw arcs centred at B D and F. Intersect with arcs centred at A, radius 95mm
  10. 10. Step 8: Clean up construction lines and darken outlines

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