With increasing frequency a number of fountain pen manufacturers have used magnetic closures for attaching the cap to the barrel.
Prior to that, the only magnetic closures I recall seeing - were used on some kit pens. In part, I believe this helped avoid the age-old thread alignment problem between the pen clip and the nib when the cap was posted.
I wonder, however, if magnets and fountain pen inks are a good marriage of materials? Some inks have metallic elements such as those that have the special sheen quality. Under certain conditions, couldn't this lead to problems with ink flow, clogged tines and perhaps erosion of the nib and/or other metallic parts near the magnetic closures?
Anyone experience problems along these lines they would like to share?