How to Repair a Table Saw Arbor

What You'll Need
Scrap lumber
Permanent market
Sand paper
Saw blade
Table saw

If you experience a problem with your table saw, the trouble might be rooted in the saw arbor. To determine whether there is a problem with the arbor, test the saw to see if there is a wobble when you use it. If this is the case, follow the steps below to repair the arbor of the table saw.

Step 1 – Finding the Problem

To fix the arbor and the problem, you need to determine the source of the problem. First purchase and install a new finishing blade, and start cutting into a piece of lumber. You will not need to cut far into the lumber; a millimeter or so will do just fine. To check for a wobble, run the same piece of lumber back against the blade, and switch the blade into the on position. Watch the blade to see in what rotation the blade rubs the piece of lumber. You may need to do this several times.

Step 2 – Marking the Arbor

Once you discover which part of the blade rubs against the wood the most, you want to mark this area on the arbor shaft. Then loosen the nut on the blade, turn the blade about a quarter turn and tighten the bolt again. Now following the instructions from step one, check to see where the blade now rubs the lumber. If the rub is staying in roughly the same location, then there is a problem with your arbor. If not, you may need to replace the blade. If there is a problem with the arbor, move on to Step 3.

Step 3 – Truing the Arbor Flange

To correct the problem with your arbor, you may need to turn the arbor flange. The arbor flange itself is a small piece of stamped metal that may or may not be flat. If the flange is not flat, that is what could be causing some problems in the saw.

Check to make sure that your flange is flat. To do this, place the flange on a flat surface, push along the edge of the flange; if it rocks, then it isn’t flat  If you find that the flange isn’t flat, place the flange on top of some sandpaper and begin moving the flange back and forth. The movement of the flange on the sandpaper will grind the side of the it flat. When doing this you will need to apply the pressure to the middle of the disc. Check frequently to see if the flange is now flat or if more grinding is needed.

Replace the arbor flange, and then test the saw again. If the wobble is still present, you may need to replace the blade or the arbor flange.