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Type: Posts; User: Paolo_MD

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  1. Definitely, the apron of your lathe is somehow...

    Definitely, the apron of your lathe is somehow confusing. My interpretation is that, if the lever on the front has indeed three positions, you are right in assuming that the dog teeth on the second...
  2. Thread: Red Lead

    by Paolo_MD
    Replies
    9
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    592

    The issue is lead toxicity by ingestion (and in...

    The issue is lead toxicity by ingestion (and in much smaller measure, inhalation, at least for inorganic lead, like lead oxides). If somebody washes thoroughly his hands before eating, the issue is...
  3. As usual, a few pictures would help a lot. In...

    As usual, a few pictures would help a lot.
    In short, there are two most common types of gibs: one, "flat" that is adjusted by a series of screw along its length. The other type (a tapered gib) is...
  4. Essentially, if I recall correctly, under the...

    Essentially, if I recall correctly, under the headstock there is a T-shaped lever pivoting at the intersection of the T.
    The leg of the T is coupled with the feed direction control bar through a...
  5. The worn key and keyway in the reversing handle...

    The worn key and keyway in the reversing handle and rod are relatively common and can be fixed by enlarging the keyway, rebushing the lever and cutting a wider key. Sometimes you can still achieve...
  6. If the stiffness is periodic (i.e. same sector of...

    If the stiffness is periodic (i.e. same sector of rotation each revolution of the screw) and the screw itself is not bent, the culprit, in my opinion, is a thrust surface not been properly square...
  7. Replies
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    On the top of what Derek said, if the issue is...

    On the top of what Derek said, if the issue is simply/mostly tailstock alignment, if you cut a 6" piece between centers (i.e. driven by a dog, not chucked in the chuck), you should observe a...
  8. What you don't want to do on any lathe is to...

    What you don't want to do on any lathe is to engage the longitudinal feed and the half nuts at the same time, since it would try to run the carriage at two different speeds, and something will have...
  9. Replies
    4
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    369

    Another beauty of conical bearings is the ease of...

    Another beauty of conical bearings is the ease of precise adjustment: although it's likely an overkill for the rear bearing (i.e. even if it is a little loose, it doesn't affect too much the...
  10. Yesterday I had the time to stop by and have a...

    Yesterday I had the time to stop by and have a chat with Gary at Cabin Fever. I managed to ask him a few things that, I thought, would be of interest to several people here.
    First, his primary...
  11. Replies
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    801

    Yes, Like in the picture that Joe attached to...

    Yes,
    Like in the picture that Joe attached to post #2, there was some gearing driving most likely a leadscrew, which was likely used both for threading and for longitudinal feeds.
    For what I can...
  12. Replies
    12
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    801

    It looks like that lathe was born without back...

    It looks like that lathe was born without back gears. Maybe a pattern-maker lathe?

    Paolo
  13. Probably, the best would be for you to go through...

    Probably, the best would be for you to go through the following two publications:
    Hendey Machine Co. - Publication Reprints - Hendey Geared Head Lathe Bulletin 1246L-12-38 | VintageMachinery.org...
  14. On the top of the information (and instructions...

    On the top of the information (and instructions on how to distinguish a 12 speed from a 18 speed) provided to you in the other thread, what kind of information are you still looking for in order to...
  15. If you have enough room, you can put a large...

    If you have enough room, you can put a large enough open wrench between the drill chuck and the body of the tailstock and retract the quill till the back of the wrench is squeezed between the...
  16. Replies
    21
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    2,324

    You might be approximately 1/3 of tooth off if...

    You might be approximately 1/3 of tooth off if two of the three jaws are swapped (and they could have been already swapped before you got it).
    Generally, anything round held by the jaws should be...
  17. The VN 38 is a completely different beast and I...

    The VN 38 is a completely different beast and I have serious doubts that the pinion and ring gear would fit (i.e. much larger cutter head, designed for much more power).

    Paolo
  18. Replies
    21
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    2,324

    is the whole body of the chuck off center, or...

    is the whole body of the chuck off center, or only the "test bar" held by the jaws?
    If it's the second, are you sure that the jaws were re-inserted in the correct order/position?

    Paolo
  19. Replies
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    540

    I would suggest measuring the threads with the...

    I would suggest measuring the threads with the three wires method to see if it is indeed worn, or is tapered.

    Paolo
  20. Replies
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    733

    PM sent Paolo

    PM sent

    Paolo
  21. Replies
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    2,170

    I believe the thinnest it could be for B grade is...

    I believe the thinnest it could be for B grade is 6-8 in thick. The surface looks trashed and, to assess if it is somehow near to flat you need at least a trustworthy parallel, and tenth indicator...
  22. Replies
    6
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    1,144

    The 22L has already limited headspace. By...

    The 22L has already limited headspace. By mounting the J head to the cutter head you'd end up with just a couple of inches between the table and the spindle.

    Paolo
  23. Thread: Hendey 14x8

    by Paolo_MD
    Replies
    24
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    1,650

    According to EngineBill, the tin in the spindle...

    According to EngineBill, the tin in the spindle bearing crystallizes expanding (and locking) them. I have seen a similar effect on the bearings of a Barnes lathe belonging to a friend of mine. In his...
  24. Replies
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    Another good point that can be taken from Brian's...

    Another good point that can be taken from Brian's pictures is that, cutting upside-down an internal keyway is equivalent to locking the clapper box without having to do so physically.
    Given that the...
  25. Replies
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    1,491

    I'm afraid you are confusing flatness with...

    I'm afraid you are confusing flatness with alignment, or you haven't described well what you're doing. A few pictures would also help us understanding better.

    The blue will transfer to the areas...
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