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You will need

-transparent tape

-blue CD marker

-a phone with flash

Step 1: Put a Piece of the Tape in Front the Flash

Step 2: Paint the Tape

you only need to paint in front of the flash

Step 3: Put Another Layer of Tape and Paint

do this 4 times and it shoud look like imag 2

Step 4: To Finish It Just Put One Last Layer of Tape

it´s done

-it is not as strong as a real UV light but you can have some fun with it

vote4me

<p>That is impressive! I didn't knw you could do that :)</p>
Thanks :)
<p>Hey, neat hack! I never thought about filtering out the phosphor color back to blue :)</p>

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