My magnet quest is finally over. As some posters have already stated (thanks guys), a diametrically magnetized magnet is what works to hold a VapCap centered and upright. It just slides to the edge with an axially magnetized magnet.
They're not real common, especially in a size for my IH, but I did find some at K&J Magnets
[Link].
Another option I found is that two common bar magnets side by side will center the VapCap - it will just slide to the edge if only one is used. They’re inexpensive and available locally at hardware stores and such.
Most importantly, the magnets significantly reduce the cool-down time. And the small magnet actually cools a bit faster than the larger bar magnets.
For testing the cooling times, I heated my VapCap M with my induction heater, then waited 20 sec before cooling with the magnets and starting the time.
- With natural cooling, the average time for the cool-down click was 55 sec
- With the bar magnets, the average time to cool was 12 sec - 358% faster!
- With the button magnet, the average time to cool was 10 sec - 450% faster!!
I’m sure all this has already been posted somewhere in this huge thread, but the info could still be helpful to some.