Reply by BrentNichols

Bert, My experience from this is that it does not need to be perfect. However it may seem that you are a little like me and we are perfectionists to a small degree. I do too put a dial indicator on my jointer blades when changing to get them within .001 of an inch, as i also do this to the tables. I also use this method align my tablesaw fence and miter track to the blade. My other friends tell me that i am way to picky when setting things up like this and as long as its close it will work fine. It would be perfectly fine without the precision we use but it would be the idea of knowing it was not close to perfect that would bug me to fix it. I hope this hepls a little.

-- BN in Indiana