strange request involving a CD
I need to find the resistance of the aluminum layer in a CD for a project I'm working on. However, I don't have access to a multimeter right now, which poses a bit of a problem.
If anyone has a multimeter and some spare time, could you do this? Grab an AOL CD (or any CD you can afford to ruin) and carefully carve away enough of the plastic from the shiny side that the Al layer is exposed. You'll have to do this twice - once at each end of a diameter of the CD... so near the rim, please. Then just use the multimeter probes. I'm not even sure if this will work for measuring the R, but it's the best way I can think of right now. If anyone does this, please post the value R that you got. Thanks in advance.
edit: sufficiently careful scraping with a knife on the painted side will reveal the Al easier. Angle the knife so it doesn't dig in and scratch over it slowly.