You know that little circlular cut-out toward the tip of most larger bars (say 20" or larger) which still has the circle of metal within the cut-out, and it usually stays stuck in place where it belongs for the life of the bar but once in awhile you get a bar and that little circle of metal falls out and then you've got a bar with a hole punched thru it near the tip and that hole fills up instantly with sawdust in every cut you make and causes the bar to get a little bound up? Why is that hole there and when that circle of metal falls out and leaves a hole, what are the options for filling the hole?
Much thanks for your input.
Much thanks for your input.