Introduction: Free Spy Glasses
you can use these to see behind you. just save 2 glasses from a 3d movie
Step 1: Step 1
punch out the lenses and throw one of the frames away. now with the other frame pry the 2 pieces apart
Step 2: Step 2
arange 2 lenses untill you have a dark purpleish color in the them.
Step 3: Step 3
put the doubled lenses in the bottom frame piece
Step 4: Step 4
glue the top frame on to the bottem one. let it dry and put it on. it works best in a well lit room or outside. look to the sides of the lenses and you shold see behind you
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