This tutorial can be found on Etsy at:
About this tutorial: This one is different from the others in that I didn't use sheet metal for any components. Everything is done with wire to create a hinged earring. See the photo below to see the moveable hinge:
This design can be done in any soft metal such as silver, gold fill, gold or copper. Below, see the copper earring. This is my mother's favorite (Christmas present? Perhaps!!):
For the design of the earring I used a pear shaped briolette. After I photograph, write and put all the steps into a document I then work the tutorial myself just to be certain that it works smoothly. When I was done I created this pair of earrings out of a triangle bead and with more chains.