If you have a front-loading washing machine, it's not impossible to felt wool knitting with your machine. Learn all about felting in a front loader.
How to Felt Your Knitting (On Purpose) - ZenYarnGarden.co
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Tips and Techniques for felting - Shiny Happy World
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Can You Un-Shrink a Felted Wool Sweater?
Sew Basics: Felting Wool - The Cottage Mama
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Learn How to Felt Your Wool Knits With a Front-Loading Washing Machine
Knitty: Fall 2007
Sew Basics: Felting Wool - The Cottage Mama