Artedna
I did at one time put O-Ring on all my bits but now I just use one rubber elec.grommet down inside the collet or in the base of the router arbor.
It keeps the bit from jaming down to the base inside of the collet when you wrench it down.
The rubber will give the bit a place to seat to.
The one I found out that works the best is a 1/8" id x 9/16" od.or 5/8" od but this will not be the same on all routers.
Find them at..
Hardware stores for a firewall wall grommets or auto stores for (sheet metal grommets)
Bj
