sunvenu wrote:The rules say "The CD must fit on the mount found in a standard CD player.
Modification of the CD is not allowed (except to affix the blades via tape, glue, etc.)." I cannot think of anything else other than tape or glue to fix the blades to CD. Are there any other ways to attach the blades to the CD without modifying the CD. Are plastic screws allowed (that would require holes in CD)?
The rule is written like that to permit tape or glue, not prohibit it, so I'd suggest sticking with your initial instinct.
It's probably also possible to build a slotted blade that has a friction hold on the cd (akin to a paper clip) but, tape or glue should give you a light and durable hold.