To accommodate the seam allowance, cut the fabric strip as wide as the finished height of the triangle + ¾” for the seam allowance. As example, for a 4” high triangle, cut the fabric strip 4 ¾” wide.
- Square your fabric and cut a strip.
- Turn the strip horizontally on your cutting mat and square the end.
- Place the ruler on the strip, aligning the 60° line on your ruler along the horizonal edge of your strip.
- Cut along the ruler edge from the bottom of the strip to the top. Save the cut off piece for scraps.
- Rotate the ruler so the opposite 60° line is aligned along the edge of the strip and cut.
- Continue rotating the ruler until the triangles are cut. It’s more efficient to move the ruler than it is to move the fabric.
- For smaller cuts, consider using an OLFA Rotating Self-Healing Mat.