KCee Golfworks discs years ago, but they didn't stick well on their own IIRC
That is what I remember also, but I thought I'd give it a go. Nothing lost and I prefer not to add
lead tape if possible as a permanent fixture. I have a number of different adhesives that should
work, be easily removed and may offer some vibration damping. If it works well, I may make if
more permanent with a stronger adhesive. To me, it was amazing how perfect those old discs
were for the project (and I have lots of them).