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Crochet Join Yarn Invisibly - Picture Tutorial
Color changing tips ...
Russian Join is a way to start a new ball of yarn without weaving in ends
How To Join New Yarn with a Standing Double Crochet Stitch
Technique for an invisible join. Very clever.
Crochet Owl - Tutorial looks easy enough for the kids at summer camp
Braiding Joining Yarn - The invisible Braided Join with 1 color yarn - Knitting and Crochet