Edge binding question

[snowplow]

Say like inside my Kifaru pack. Is it just for looks? To make it look professional? Or could you get away with just zig zag stitching the edge?

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[WoodBow]

It gives it a finished look, reinforces the seam, and add some water resistance. It definitely is not necessary. No need to zig zag either.

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[snowplow]

Thanks just curious

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[5shot]

Really just keeps fraying to a minimum, but doesn't add much of anything else.

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[pods8 (Rugged Stitching)]

Finished look, fraying protection, and as noted its a second stitching line (with a backing material) just slightly inset from the original so it adds a backup seam if the first one gets stretched badly.