Flat Slip Stitch Join Tutorial (Zipper Method)
Tutorial skill level: Easy
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This helpful tutorial from Look At What I Made walks you through how to join crochet squares using the completely flat slip stitch join, also known as the zipper method. This technique creates a nearly invisible seam and keeps your squares perfectly flat, making it ideal for joining motifs into a blanket or other flat project.

What makes this pattern stand out:
- Project Type: Crochet Square Join Tutorial
- Finished Project Size: Custom, based on joined squares
- Skill Level: Easy
- Yarn Weight: Any (matches project squares)
- Hook Size: Matches project yarn
- Stitches: Slip Stitch (Back Loop Only)
- Tutorials: Step-by-step photo tutorial
- Why we love it: This flat, no-bulk join gives a smooth, professional look with a subtle ridged seam.
Try this method for your next blanket project for a seamless, polished finish.

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