Writing on Heat Shrink Materials Before Shrinking

• 1). Write on the pre-cut heat shrink material with a fine-tipped, permanent marker, such as a Sharpie, on the same side that you are adding color or drawing your design onto, or write the letters or design with dark colored pencils. Pencils will be a lighter shade than using a marker.
  
  
• 2). Write your letters clearly, as they will shrink upon contact with the heat source.
  
  
• 3). Write your letters or other designs with plenty of room around them so that when it shrinks it does not merge into another part of the design.
  
  

Writing on Heat Shrink Materials After Shrinking

• 1). Allow the item to cool.
  
  
• 2). Write on the shrunken material with a fine-tipped, permanent marker on the side of the material that you added color to prior to the shrinking process. This is generally the rougher side.
  
  
• 3). Make your lettering clear. Block letters are easier to read and easier to size smaller.