Use a old hard drive as a sander.

Step 1: Hard Drive

Remove all the screws to reveal the inside. And then take out all the components. Leave the bottom plate on if you have one.

Step 2: Sanding Disk

Get your sandpaper and trace the platter onto the sandpaper.

Add super glue and glue the platter to the sandpaper. After the glue dries cut out the platter with a knife.

Put the sanding disk back on.

my hard drive needed the rw arm on to work so i left it there.

Plug in the power to start it up.