The instructions may provide exact instructions for their specific paper on heat level, how long you should iron the transfer, and how long to wait before separating the paper from your fabric.

Colorful T-shirts were made possible by iron-on transfers in the 1970s. | Hazel Nicholson, Flickr // CC BY 2.0 Harrison Cutler wasn’t having any of it. It was September 1966 and Cutler, who was ...