Since using routers in my remodeled workshop is fairly new to me, I have a question. Can router bits be sharpened as can drill bits or does one simply discard them when dull, etc. Approximately what type usable life do they have? I realize part of the answer to this depends on how much one uses it. For example, today I put an edge on 3 sides of 4 1 by 12's I had made some shelves out of. Using this as an example, any idea how many shelves I could do like this before the bit needed to be replaced?
thanks Al
