Thermo Purple Pen Blanks
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Resin Blank
VENDOR: Pen Blank Sales
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Made using 4 different colors of temperature changing pigments, the Thermo Purple blanks will change colors after heating to just 86 degrees in the user's hand. They'll return back to normal color in no time, and are considered "cold activated" at just 72 degrees.
Made with the wonderful Oakbrook Casting resin, each blank is 1" x 6" and adequate size for nearly any pen kit as well as diamond painting pens.
NOTE: The pigment used in these blanks is heat sensitive and can change color several times over, however, keeping pens made from this blank in the sun over time will create a "sunburn" on the pigment eventually causing it to cease changing color.
**Conforms to ASTM D-4236**