Record Lampshade

Step 2 Cut the Record

I used some diamond mini cutting discs on a rotary tool to make the cuts. The guide here is to start just to the left of a line, start cutting, follow the groove, and stop just before the second line you hit. Repeat three times and you've finished a circle.

For the next circle, start at one of the lines you crosses over and repeat the process. This is much easier to see in the picture.