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  1. Replies
    20
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    776

    Will that lathe twist?doesn’t look to be too long...

    Will that lathe twist?doesn’t look to be too long from the photo.
  2. Replies
    39
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    3,316

    This is the CNMG I refer to: Google Image Result...

    This is the CNMG I refer to:
    Google Image Result for...
  3. Replies
    39
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    3,316

    In my experience with lessor grade inconels a 45...

    In my experience with lessor grade inconels a 45 degree approach makes a huge difference. As stated a sharp tool, and 45 degree chamfer at cut start. Sandvik make a cnmg insert with a 45 degree...
  4. That cap screw looks like it’s positioned on an...

    That cap screw looks like it’s positioned on an angle to clamp a boring tool adjustable cartridge.
  5. I believe it will just like a lathe tool....

    I believe it will just like a lathe tool. Otherwise the sides of your taper won’t be straight.
  6. How long is the part compared to your table size?...

    How long is the part compared to your table size? What’s the part doing exactly?

    How are you checking the runout currently?

    Positioning the part central about the table is not required. The...
  7. Replies
    43
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    4,363

    I have no experience with stuff that small, but I...

    I have no experience with stuff that small, but I had some thoughts, similar in one sense to Ox’s.

    I don’t know how wide your parting tools are or what machine you have, however I was thinking...
  8. Replies
    25
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    2,439

    To add to the Destacos idea, stack them say 8...

    To add to the Destacos idea, stack them say 8 high or even 10 if it will work.
  9. Replies
    9
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    1,044

    This is where the penny dropped for me. If your...

    This is where the penny dropped for me. If your start up move isn’t greater then the tool radius or the same as then your already cutting, unless you do as you said above apply above and drop down to...
  10. The Mazak VMC at my last job had about 50% Z axis...

    The Mazak VMC at my last job had about 50% Z axis load just sitting there. I kind of felt Mazak could have done better there as when hard drilling load come to near Zero telling you nothing about how...
  11. Replies
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    1,044

    I think you may be confusing yourself which isn’t...

    I think you may be confusing yourself which isn’t hard with these things it took me a while. Your machine is moving less than the tool radius, but your program is moving your tool radius plus the...
  12. Replies
    15
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    1,354

    If it’s anything like the one we had at my last...

    If it’s anything like the one we had at my last job it’s a gear pump, not an impeller pump. It should be below coolant level for self priming but I don’t think it was? You could perhaps put a check...
  13. Even a builders spirit level will you you pretty...

    Even a builders spirit level will you you pretty close. You could hollow out the flat so it doesn’t rock. Could even just file a depression if it’s aluminium.
  14. Replies
    35
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    3,422

    That’s pretty much what I was referring to. If...

    That’s pretty much what I was referring to. If the opposing jaws had their own scroll it would be fine, but AFAIK they don’t, and a self centering + independent may as well have an independent for a...
  15. Replies
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    3,422

    Better yet is the self centering 4 jaw for square...

    Better yet is the self centering 4 jaw for square work, shudder.
  16. I like the idea of drilling through and putting a...

    I like the idea of drilling through and putting a rod for truing up for drilling 90 degrees to. That makes life easy a lot. If your only drilling one set of holes at a time and not shifting the table...
  17. Where I used to work they had some around 3” dia...

    Where I used to work they had some around 3” dia bright bar say 3” long drilled and counterbored for a socket head cap screw perpendicular to the bars axis. These were placed in the tee slots,...
  18. I have no experience with these machines or that...

    I have no experience with these machines or that style bearing but .006” or .008” for a 21” bearing seems like a pretty neat fit. Not saying it won’t work though but good fits become tight fits as...
  19. Replies
    42
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    5,199

    Had a similar story years ago. A fella went into...

    Had a similar story years ago. A fella went into the machine thinking the program had stopped, ( I’m still unsure how that came about as the table went out and spindle to tool change position...
  20. My point of view of workmanship is yes...

    My point of view of workmanship is yes technically it is an ok part and may even function ok, but it is not inline with what I would call good reasonable standard work. At my last job we used to do...
  21. Replies
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    Citric acid is good also. Can’t be oily though.

    Citric acid is good also. Can’t be oily though.
  22. Replies
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    3,153

    What’s the maximum wind speed for a lift like...

    What’s the maximum wind speed for a lift like that? Rule of thumb here is 20m/second but something that is meant to catch the wind might be much less?
  23. Thread: Safety First

    by number 2
    Replies
    56
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    6,505

    A fella I used to work with did training for new...

    A fella I used to work with did training for new CNC mills. One time he said he was training the owner and which ever combination of keystrokes he used, I can’t remeber now but it should of either...
  24. I wouldn’t think tool weight would make a fat lot...

    I wouldn’t think tool weight would make a fat lot of difference to the spindle. Compared to drilling tough steel thrust would far far exceed 30lb. If spindle speed up is an issue use override and...
  25. Replies
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    1,301

    If your jaws are long enough they should bridge...

    If your jaws are long enough they should bridge the flutes and grip the lands. With some packing and not over tight should be ok. Or use the tail stock and use packing on the jaws and grip the neck?...
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