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  1. I was thinking an open side planer. Tooling will...

    I was thinking an open side planer. Tooling will be cheap. Could stack multiple sheets together and cut at once.
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    90ft/ min for HSS in steel is normal. Try...

    90ft/ min for HSS in steel is normal. Try speeding up a little. Could be thrust bearings even are stuffed in the quill, but they would have to be well gone to cause a real problem drilling I would...
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    I think there is limited use. However for...

    I think there is limited use. However for prototypes, one off odd jobs, or hobby work it could create a usefull feature with very little tooling. The alternatives are what? Broaching, rotary broach,...
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    Glad I clicked on this thread, that is pretty...

    Glad I clicked on this thread, that is pretty damn awesome!
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    Itís an interesting spindle design and a little...

    Itís an interesting spindle design and a little backwards to how you would expect. I recall Tyrone Shoelaces speaking of a Kearns borer which had unusual thermal growth of the spindle, which seeing...
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    The front or right hand bevel is keyed to the...

    The front or right hand bevel is keyed to the feed shaft, and in normal no feed conditions will be stationary, the left hand bevel drives all the time. When feeding the right hand bevel will turn...
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    That is the second diagram of a facing head I...

    That is the second diagram of a facing head I have studied but both appear to operate the same. The important part as I see it is the differential. The drive comes off the spindle, to the...
  8. As already mentioned, the problem is likely the...

    As already mentioned, the problem is likely the screw. If it’s old the part of the thread that gets used is probably stretched differently to the upper part and has pitch error. Or it might be simply...
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    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.
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    This is the CNMG I refer to: Google Image Result...

    This is the CNMG I refer to:
    Google Image Result for...
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    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...
  12. 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.
  13. 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.
  14. 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...
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    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...
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    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.
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    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...
  18. 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...
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    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...
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    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...
  21. 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.
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    Thatís pretty much what I was referring to. If...

    Thatís pretty much what I was referring to. If the opposing jaws had their own scroll it would be fine, but AFAIK they donít, and a self centering + independent may as well have an independent for a...
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    Better yet is the self centering 4 jaw for square...

    Better yet is the self centering 4 jaw for square work, shudder.
  24. 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...
  25. 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,...
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