Have you ever tried to heat press interfacing to a piece of fabric on to a cut-out garment piece only to have it NOT stick?…Frustrating huh? 

In years past, we here at the Costume University Studio Workroom had problems with heat press-on interfacing or any kind of heat  “press-on” glue products to some fabrics.  No matter how much you try to press it, the heat press-on product would not stick to the intended fabric….until we found the secret.

Thanks to CostumeU staffer “Stitch Rich”, we discovered that heat press-on interfacings and many other heat set products don’t stick to fabrics with “Sizing” on them.

Sizing is a modified starch finish that is applied to a fabric at the mill to make the fabric stiff & flat and look more pressed, so it looks good when you purchase it.

So remember to wash that fabric before you try to stick anything to it, don’t use fabric softener in the washer or dryer…those products are both a form of SIZING!

Any Questions, comments or if you have a Costuming Tip to share, please write me at Ideas@CostumeUniversity.com  We would love to hear from you.

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Skip Stewart
Sr. Writer, Costume University