redfishsc
Member
Howdy y'all.
My Delta Midi has been turning out of round lately. I noticed the problem getting progressivly worse as my penturning skills seemed to be getting progressivley worse. The pens were oval, and I checked EVERYTHING. Mandrel good, live center good, MT2 was clean, nut was only finger-snug, tailstock not too tight, and I went so far as to buy the Beall collet chuck.
The FIRST time I mounted the Beall (with no collet... just to check for fit) and turned on the lathe, my problem became VERY apparent.
The end of the Beall was turning a heavy 1/32" out of round--- ie, wobble. I bet the Beall is fine, I'm pretty sure it's the headstock that's turning wobbly b/c I found the same problem with a faceplate (which I've never used on this particular lathe until I used it to detect wobble--- wobble it did).
I tried drilling a blank with the collet and it drilled the blank nearly 1/16th lopsided (ie, when it exited the back of the blank I the hole was way off center---- the front of the blank was just an oversized hole).
I have narrowed the problem down to one of two things:
Either the bearing(s) are shot--- which they don't seem to be--- they feel smooth and tight with no wobble, and they fit the machine quite snug...
Or.... the spindle shaft that holds the step-pully is slightly bent. Not sure how that would happen, it's pretty thick steel and the lathe hasn't been that heavily used.
What would you say?
I know where to find bearings (which I am getting tomorrow) but I have no clue where to find a spindle shaft if the bearings don't work out.
My Delta Midi has been turning out of round lately. I noticed the problem getting progressivly worse as my penturning skills seemed to be getting progressivley worse. The pens were oval, and I checked EVERYTHING. Mandrel good, live center good, MT2 was clean, nut was only finger-snug, tailstock not too tight, and I went so far as to buy the Beall collet chuck.
The FIRST time I mounted the Beall (with no collet... just to check for fit) and turned on the lathe, my problem became VERY apparent.
The end of the Beall was turning a heavy 1/32" out of round--- ie, wobble. I bet the Beall is fine, I'm pretty sure it's the headstock that's turning wobbly b/c I found the same problem with a faceplate (which I've never used on this particular lathe until I used it to detect wobble--- wobble it did).
I tried drilling a blank with the collet and it drilled the blank nearly 1/16th lopsided (ie, when it exited the back of the blank I the hole was way off center---- the front of the blank was just an oversized hole).
I have narrowed the problem down to one of two things:
Either the bearing(s) are shot--- which they don't seem to be--- they feel smooth and tight with no wobble, and they fit the machine quite snug...
Or.... the spindle shaft that holds the step-pully is slightly bent. Not sure how that would happen, it's pretty thick steel and the lathe hasn't been that heavily used.
What would you say?
I know where to find bearings (which I am getting tomorrow) but I have no clue where to find a spindle shaft if the bearings don't work out.