Seth K+J magnetics has all shapes and sizes of rare earth (neodymium) magnets. They have a nice website, and I've bought lots of stuff from them for unrelated projects. My idea is round flat disk magnets, with the poles aimed along the flat part of the round disk shaped magnet. It's called diametric magnetization.
Like this model: http://www.kjmagnetics.com/proddetail.asp?prod=R424DIA That way the magnets will self-align to one another by just getting them close. Wet and cold (and DARK) won't matter in the slightest. That aligns your two contacts every single time. Round makes it easier to fabricate a weatherproof exterior that still allows the magnets to rotate when they are self-aligning. The thing I haven't worked through is how to put the contacts on there where they are reliably sandwiched without scrubbing each other off when the self-alignment part is happening. Maybe a plastic spacer, that also tunes the pull force by separating the magnets by just the right amount. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/VWVsdzk21JkJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
