How toMake an Invisible Ink UV LED Wand (2nd - 8th)
6 steps
What you’ll need
One per participant
Jumbo craft Stick
One per participant
1.5" (Medium) Binder Clips
2" square, reusable and sharable
Small Pieces Of Sandpaper
10" - 12" per participant
1/4" Copper Tape
Two per participant
3v Coin Cell Batteries (CR2032)
One per participant
Ultraviolet LED (5mm)
Markers
Mark craft stick with negative and positive symbols.
1
Tear & apply copper tape - peel back a little, stick down, and carefully remove backing as you go.
2
Identify the annode (positive wire) of your LED by bending a "foot" on the longer leg.
3
Slide LED onto the craft stick with bent annode on the "+" side. Cover each leg with copper tape.
4
Remove paint from the inside edge of a binder clip - this is your springy switch / battery holder!
5
Take two 3V batteries, stack positives up & clip both to negative side copper tape. Time to glow!
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