Well, I tried the tap solution years ago, it was better than a non tapped point but didn't work all that well overall. A better solution is to wrap a piece of sandpaper around an old shaft with a point taper, insert in the point and spin the shaft around a few times, this will clean the inside of the point to bare metal. Tap out the dust and glue the point on with two ton epoxy, it isn't coming off and can still be removed with heat but will need a bit more than one would use with hot melt.