There is a good way to cut CD's you need a zero clearance insert or surface, this is to support the cd while cutting, second you need to cover the cd with blue tape. The tape acts like a lubricant and helps prevent melting back together. You do not need to really slow the speed way down, mid range is good and using a reverse blade helps keep the kerf clear as well.. Another thing you can easily cut is the platters from inside a scrapped hard drive. Disassemble the hard drive cover the platter with tape and use a #3 jewelers blade, you get a very nice and shiny ornament.
DW