Journal
How-to
Care
How to wash an embroidered hat without wrecking the stitching
The thread is tougher than the cap. The only thing that ruins embroidered hats in the wash is heat, and heat is easy to avoid.
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How to iron on an embroidered patch (and when to sew it instead)
Heat-seal backing is strong if you give it enough heat, enough pressure, and time to cool. Here is the method, the fabrics to avoid, and how to do a cap.