I recently was referred to and watched a sharpening video by Jeff Veff. He has designed his own type of serrations. He also designed a sharpener for serrations.
It’s available on Amazon. Not too expensive.
But, it seems to me that someone on this forum has already mentioned a workable alternative.
Get different diameter wood dowels and wrap various grit sandpaper around them. Select the dowel diameter to fit the serration and it works.
I also seem to recall someone suggesting strapping different sized and grit diamond files to a WE platen.
And of course there are bunches of videos with other non-Wicked Edge solutions.
I’ve been using extra-fine diamond files, sharpie and doing them by hand.
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For Now,
Gib
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"Everyday edge for the bevel headed"
"Things work out best for those who make the best out of the way things work out."