[Roccus]

Very nice solution to your problem..... I made a simular devise a awhile back, but slotted it in the middle, thus I could stick the sand paper in the slot and as it spun it held itself in place... no tape or glue.

Have you swam those bottles???? just asking because it is my experience, that to acheive a good wiggle and straight swimming plug, the deepest part of the cut needs to be above the center line....if it's too low, they dive but dont swim....

I've got a bunch of bottles ready for paint, Maybe i can post some pictures before the weekend.