Flat fell seam

Flat fell seam or also known as jean seam is a helpful seam option when using heavy fabrics because it's very secure seam that allows you the fabric to lie flat. Flat fell seams can be made on the inside or outside, depending on the look desired, and for a more casual look, or on very heavy fabrics, stitch a mock flat fell seam for a similar appearance with less bulk.


This is what flat felled seam looks like,

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