Visteonguy said:HI Shannon,
I usually put the router bit all the way to the bottom of the spindle, and then pull it up maybe about 1/8 " or so, and then tighten the lock nut,,,
Take care all who may read this as some routers have a deeper chuck than others such as the Makita 3612 and 3612c
I seen a hint from someone in a book not very long ago. This guy put a small rubber O-ring inside the spindle first and then pushed in his router bit on top of the O-ring, all the way to the bottom of the spindle. When he took out the router bit,, of course the O-ring stayed inside the spindle, but from then on it was automatically at the right height and it was set at the same height every time he put in bits,,, I think that was a good idea.
The idea of the O-ring was to set it round your cutter shank to prevent the cutter from dropping into the chuck too far especially when the router is used in the plunge mode. The makita routers are supplied with a small plastic cylinder that is dropped into the chuck before inserting the cutter
You just want to make sure that the small radius that is on the shaft,, right under the cutter,,, is not setting on the spindle,,, or it may not have a tight grip on the shaft of the cutter you have installed in the router,,
position the cutter so that the chuck will not tighten up on the small fillet. I usually have my cutters showing 5-10mm of cutter shank projecting out. The chuck is usually 20-30mm long therefore there is no need to push the cutter into the chuck too deep. You will also loose some plunge depth as well