Creating the Shade
Measure the distance across your wine glass opening at its widest part (i.e. the diameter) with a compass.
Add 3/4th of an inch (19.05mm) to that diameter. This will be your initial arc.
Mark the long edge of a sheet sheet of paper at a point approximately 1/3 of its length. Legal paper works the best, but you can get by with an 8.5 x 11 (21.5 x 28cm) sheet of paper if you are careful.
Place the protractor along the edge of the paper with its center over the mark made in the previous step.
Mark a 110 degree angle. Angle it away from the longer section toward the shorter, 1/3rd edge of the paper, forming an obtuse angle.
Draw a line through the two points. Extend it to the opposite edge of the paper.
Draw a dashed line 1/4 to 1/2 an inch (6.35mm to 1.27cm) beyond the first line. This will be the "flap" or "lip" used for taping or gluing the edges of your shade together.
Use your compass with the measurement from the glass opening to draw an arc from the center point of your angle on the paper.
Determine the height you want the lampshade to be. Open the compass to the height measurement and draw a second arc, using the same center point. The distance between the two arcs will be the height of your shade.
Fitting the Shade
Cut along the lines you have made. Cut the two arcs, and then cut outside of the "flap".
Curl the paper to line up the two straight edges. Overlap them slightly before fastening with tape or glue.
Set the shade over top of the glass opening with the wide end down to test fit. At this point, you can decorate the shade as you wish: Use hole punches to allow direct light through. Draw designs on it. Scallop the edges. Put stickers on it. Your imagination is the only limiting factor!Shade short.jpg
Enjoy your new lampshade!
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