There are several things I don't understand about router table fences.
1. If you build your own fence, how do you move it closer/further from the bit with any degree of precision or accuracy.
2. and then if you buy a "fence" like this, do you still need a taller fence in front it or is that tall enough? (it doesn't look that tall to me)?
3. What about this kind of fence? How does that move toward or away from the bit?
4. Or this one? How does it move on the table?