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Thanks. I did clean up just the bottom 1/8" of the spindle, as that's where all of the corrosion was. It didn't help a lot because there is quite a bit more inside the chuck. I think I'm going to buy a replacement chuck and see if that fixes it. Next question, does the spindle come out of...

The tapered shaft has a runout of 0.006" (+/- 0.003). However the bottom eighth inch or so of the tapered shaft has corrosion damage or some kind of buildup on it. I put the chuck back on and measured the runout of the chuck at the collar and that measures about 0.028", so it appears the...

Also, the only copy of the original manual I've found so far (it is actually for the 103.0305 which appears to be the same press with a taller column) only has the first two pages. I found instructions for a different Craftsman drill press that has a similar construction. I thought this might...

Thank you Adrian. I wasn't planning to tear this one down and rebuild it, but either the run-out seems excessive or the chuck wasn't straight on the spindle. Hopefully cleaning out the tapered bore, wiping down the spindle and re-seating the chuck reduces the wobble. If not, I guess I should...

I have a Craftsman 103.0303 that is overall in pretty good shape that I picked up at a garage sale for $30. It has a bit of a wobble easily visible at the end of a drill bit. I removed the chuck from the spindle using #6 wedges and put a dial indicator on the tapered spindle. The spindle is...