This video demonstrates how to seam together finished, horizontal edges in three different scenarios: BO edge to CO edge (as for seaming one end of a knitted strip to another, or items such as blanket squares), BO edge to BO edge (as for shoulder seams), including edges that have shaping that causes a stair step edge.

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To jump right to a specific point in the video, click on the adjacent timestamped link:
Introduction: 0:00
The three scenarios described: 1:07
Scenario #1: BO to CO edge seam: 2:24
Scenario #2: BO to BO edge seam - straight across: 7:58
Scenario #3 BO to BO stair-step seam: 11:07
Advantages and Disadvantages of mattress stitch/woven seam vs other methods of joining horizontal edges: 12:19

If you have questions about this video, or suggestions for future videos, please let me know down in the comments or on social media.

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