3andstop said:The steam method is by far the best way to fix your shaft. The way I do it is to double aluminum foil over a small pan of water. Place an elastic band around the pan to hold the foil firmly on the pan.
Be sure to have a crown in the foil kind of like what those old popcorn foils look like after the corn popped. Before you place it over the pan, poke a small hole in the center of the crown from the inside. Use a pencil but try not to make it as large as the whole pencil, just about half way up the point.
Turn the stove on, and let the water boil until its going crazy. When the steam is really coming out with force, place the portion of the shaft with the ding right under the portion of the steam that you can see and into what is invisable. Do this because if you can see the steam it is starting to condense and cool and what is under that is hotter.
4 to 6 seconds, dry with paper towel, allow to cool a few seconds and check, repeat as needed.
I personally take 1200 wet dry sandpaper after the shaft is fixed and cooled and take down whatever wood has slightly raised. Then I find a pretty crisp dollar bill and burnish the shaft with the backside of it, moving fast enough to produce lots of heat. You can do this step a few times. Even double fold the bill to get more heat before it burns you. It comes out like glass. ( The dollar works well also rolling the side of your tip after you dampen it. It will harden and burning nicely.
I like this one too.