[The Hobbyist]

I used UV ink pens to draw patterns for Christmas decorations. A black light is used to see them for painting the design, but there is no visible line in the final design!

Joe

 

[The Hobbyist]

You only see the UV Ink drawn lines with the black light on. You can turn it on and off with a foot switch or whatever. It helps you to paint shapes without any visible guidelines to cover up or erase.

Joe