Greetings Carl, well you will receive lots of comments on this subject! Where as a blade is "X" inches from where the wood first meets the blade and then exits the blade a router is a round point of reference. Say take a piece of paper and draw a line, this is the blade so anything coming in contact with it must of necessity be parallel to it i.e. the fence. Now put a dot or circle on the paper this represents a bit in a router and the wood can contact it at any point on that dot or circle. Unlike a blade you can in fact contact a bit from the wrong side and send something flying. With a blade if the wood gets out of plane with the blade it goes flying, called a kickback. We do not hear about the problem with a bit although there was some conversation about that a while back. You can put a fence at nearly any angle to the miter slot, if you have one and it makes no difference unless as I said you come in on the wrong side of the bit altogether. You get your fence out of alignment with a blade by just 32nd and you will have binding and burning of the wood if not a kickback. I think I will stop now and let someone much more experienced that myself explain it better. I will say I have a miter slot on mine not so much because I needed it but because I didn't know any better. I do use mine for doing the end of a piece of wood, and sometimes I will use the fence to help guide the wood and in that case the fence must be perpendicular to the miter slot. Even without a bearing, the fence can intersect the bit at any angle if you think about it.
Oops said I was going to stop, I am in over my head to be sure.
Wisdom: Where experience and knowledge combine and become one.
"We are all one decision away from Stupid!!"
"How often we sacrifice the permanent plans of God on the altar of immediate solutions"
I have a very good memory, just short is all.
Last edited by xplorx4; 07-28-2009 at 06:20 AM.