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Type: Posts; User: Paolo_MD

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  1. If it's steel (attracted by a magnet, you could...

    If it's steel (attracted by a magnet, you could build a slide hammer with a relatively strong magnet. The advantage would be in a pull exactly on axis with the pins.

    Paolo
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    Your barrel has to come off either you re-bore...

    Your barrel has to come off either you re-bore it, sleeve it (referring to y0ur other thread), or replace it: what about removing it, so that you can measure the threads and all other dimensions?
    ...
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    I would consider Moglice or something equivalent....

    I would consider Moglice or something equivalent.
    For the prepping, rather than sandblasting (which could negatively affect areas next to the pit, I would clean, deepen and rough-up the pits with a...
  4. A picture would be very helpful. When talking of...

    A picture would be very helpful.
    When talking of clips and micrometers, what it comes to mind are the clips used to hold on the anvils the three wires when measuring threads.

    Unfortunately, I...
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    Doozer, Probably, you'd better ask this question...

    Doozer,
    Probably, you'd better ask this question in a new thread.

    Paolo
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    Do you mean the bearings don't handle well the...

    Do you mean the bearings don't handle well the extra speed? From the electrical point of view, I think the lower frequencies (especially in "vectorless mode") are the more demanding for the motor:...
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    I'm unable to hear any tel-tale sound in the...

    I'm unable to hear any tel-tale sound in the videos. Just some noise from worn gears with probably too mach play between meshing teeth.
    I think it would be a good idea to run the motor and listen...
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    You have mentioned that you can silver-solder: if...

    You have mentioned that you can silver-solder: if you have ox-acetylene torch, you should consider brazing with a bronze rod, which flows much less than silver and is better for build-up. Plenty of...
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    Probably, I'm the other forum member you're...

    Probably, I'm the other forum member you're referring to in regards of using the table as the primary aid for sliding forward the ram assembly.
    The memory is a bit foggy right now. But I kind of...
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    It could also be a banjo for an universal...

    It could also be a banjo for an universal dividing head.

    No help on make, etc.

    Check if there is any letter or number cast in the part,

    Paolo
  11. Kevin, First of all, I like the way you have...

    Kevin,
    First of all, I like the way you have approached this crowd.
    Don't take too negatively the replies. Most of us have fallen in the same or similar rabbit holes.

    We don't know much of your...
  12. I believe that Moglive would present the same...

    I believe that Moglive would present the same friction problems of Turcite and other materials designed to reduce friction.

    Paolo
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    Especially if you have limited funds and no...

    Especially if you have limited funds and no access to a well furnished workshop, building a lathe from the parts you have will be definitely an educational experience, buy many times more expensive...
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    I guess that the overarm should be stiff enough...

    I guess that the overarm should be stiff enough for a J head, if you keep it as close as possible to the ram.

    However, unless you're doing your gang-milling on a different machine, to me it seems...
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    The very part could be your "sine plate": measure...

    The very part could be your "sine plate": measure the distance between where it rests on the table and where you would have to put the "blocks", and you can calculate how high your blocks/machinist...
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    Have you considered a different approach, like...

    Have you considered a different approach, like using the 45° cutter and nodding the milling head or setting up the piece with the dovetail at 5°?

    Otherwise, I'd suggest you to search for the PDF...
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    PM sent. Thanks! Paolo

    PM sent.

    Thanks!

    Paolo
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    Feynman, Just two quick comments. Precision...

    Feynman,
    Just two quick comments.
    Precision level vials are relatively inexpensive (< $100) and extremely useful. Something I strongly suggest you add to your toolbox.
    To measure the twist you...
  19. Have you considered using a VFD instead? Being...

    Have you considered using a VFD instead?
    Being able to momentarily change spindle speed without stopping and changing gears and tuning the speed to reduce vibrations and chatter are some of the...
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    Just a couple of quick considerations. First,...

    Just a couple of quick considerations.
    First, making a small boring bar is even simpler than a D=bit: you can free-hand it and the only critical part is to grind and stone a sharp edge and have...
  21. Magnets are generally rather fragile. I'm afraid...

    Magnets are generally rather fragile. I'm afraid that your solution wouldn't work great with anything well seated.

    Paolo
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    I want to stress what Milland said: such long...

    I want to stress what Milland said: such long prism is almost as rigid as an overcooked spaghetti. Dennis Foster's 36" is a good compromise between a regular straightedge and a true camelback one....
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    I suspect that you're dealing with...

    I suspect that you're dealing with peening/compression stress. Generally, the stressed part is convex, like the top of the table of a milling machine.
    Scraping material off the area that could have...
  24. I think the first consideration is about an...

    I think the first consideration is about an unbiased evaluation of the wear of the ways, etc. and availability of other machines in gair shape.
    Given that the gearbox and spindle are in oil bath...
  25. The main problem in using the very machine to...

    The main problem in using the very machine to measure distances is that such measurements are affected by part of the inaccuracies that got the part out of specs in the first place.
    If you could...
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