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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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#1
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Why can't I get the "wobble" out.
For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014.
_jim |
#2
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Why can't I get the "wobble" out.
jtpryan wrote:
For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? -- G.W. Ross Megabyte: A nine course dinner. |
#3
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Why can't I get the "wobble" out.
In article ,
"G. Ross" wrote: jtpryan wrote: For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? Try putting a piece in the chuck and not using the tailstock. If you still get the wobble, check the headstock bearings, or try turning something between centers without the chuck, in case its the chuck. |
#4
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Why can't I get the "wobble" out.
That is a good hint - tapers are made with offset tailstocks
Is your lathe level ? or is the bed twisted ? Put a level on the ways at the head and tail - then lengthwise. Jack up a leg or two to make it level. Wait a week or two and check again as the twist starts to come out - might need adjusting. Martin - both metal and wood lathes. On 10/12/2012 4:28 PM, G. Ross wrote: jtpryan wrote: For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? |
#5
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Why can't I get the "wobble" out.
On Friday, October 12, 2012 5:28:12 PM UTC-4, G. Ross wrote:
jtpryan wrote: For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? -- G.W. Ross Megabyte: A nine course dinner. How do I do that? Just bring the two together and see if the points meet? If they aren't, how is it adjusted? I'll check the other points today. Thanks, Jim |
#6
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Why can't I get the "wobble" out.
jtpryan wrote:
On Friday, October 12, 2012 5:28:12 PM UTC-4, G. Ross wrote: jtpryan wrote: For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? -- G.W. Ross Megabyte: A nine course dinner. How do I do that? Just bring the two together and see if the points meet? If they aren't, how is it adjusted? I'll check the other points today. Thanks, Jim There should be a bolt on the bottom of the tailstock. Loosen it and get the points in alignment, then tighten the bolt. If it gets out often, you can buy an alignment tool which has a Morse taper on each end. Loosen the bolt and slide the tailstock up so that the tool holds it in alignment, then tighten the bolt. Some lathes may have another method for holding the tailstock in alignment--I've only owned three so cannot say about the many other brands. -- G.W. Ross If we can build a space shuttle, why can't we build a decent mattress handle? |
#7
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Why can't I get the "wobble" out.
On Tue, 16 Oct 2012 10:44:27 -0400, "G. Ross"
wrote: On that Jet lathe, put your spur and revolving center in as if you were going to surn a short spindle.... With the points about 1/2" apart, slowly crank the tailsock out until thepoints are almst touching.. (I like them about a paper thickness apart) If they are not perfectly point to point, first check the adjustment on your swivel lock pin on the headstock... All this is covered in your manual..If you've misplaced yours let me know and I'll pull mine out for specifics.. jtpryan wrote: On Friday, October 12, 2012 5:28:12 PM UTC-4, G. Ross wrote: jtpryan wrote: For some reason I always seem to have a very slight wobble in my work. For example, I have just started turning a pepper grinder. So, I turned a tenon on one end and put it in my chuck. I bring up the tail stock to keep nice even pressure on the piece while I tighten the jaws. Now I turn down the blank to where it it is a cylinder and should be true. But even with the tail stock in I experience this very slight wobble. I mean if I bring the tool rest up and take a tool, say a skew, and bring it closer to the piece it will start hitting it unevenly, sort of a tick, tick, etc. And no matter what I take off it still does this. Could I have an issue with my lathe? It's a Jet 1014. _jim Have you checked that the tailstock is aligned with the headstock? -- G.W. Ross Megabyte: A nine course dinner. How do I do that? Just bring the two together and see if the points meet? If they aren't, how is it adjusted? I'll check the other points today. Thanks, Jim There should be a bolt on the bottom of the tailstock. Loosen it and get the points in alignment, then tighten the bolt. If it gets out often, you can buy an alignment tool which has a Morse taper on each end. Loosen the bolt and slide the tailstock up so that the tool holds it in alignment, then tighten the bolt. Some lathes may have another method for holding the tailstock in alignment--I've only owned three so cannot say about the many other brands. |
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