Pattern Making Fundamentals: Blending and Trueing March 6, 2020 by Margaret What is blending and trueing? Blending and Trueing. Blending is the process of smoothing and shaping angular and curved lines on a seam to create a nice transition. This post has moved to https://letslearntosew.com/blending-and-trueing/ « Understanding and Working with DartsPattern Making Foundation: Dart Manipulation and Pivot Points »