So I've recently picked up the beginnings of the woodworking habit and the #4 plane I bought is duller than a butter knife.
It strikes me that the right thing to do is to have something I can use to sharpen it back and forth across a bench grinder that will keep it square with the wheel.
As the primary purpose is truing and truly flattening wood surfaces I have to imagine that the precision requirements of the blade being "flat" are pretty fine.
I'm thinking some kind of jig with a cross-slide would do the trick. But I'm having a hard time visualizing what the supporting structure would look like.
Any thoughts on this? My bench grinder is still sitting in a box (only just got it as a gift.)