Drilling straight centered holes in a rod without a lathe - Page 3
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  1. #41
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    I’m bored and appreciate the distraction.

    Chuck the rod in the drill chuck extending down with the bottom end of the rod passing through a hardwood block that has been bored to the diameter of your rod and split and greased. Clamp that split block together and clamp the block to the table of your drill press in line with the chuck. The rod should penetrate through the hole in your drill press table. This will essentially rotate the bar and allow you to force the bar downward using the quill.

    Next, place a 4 1/2” drill vertically facing up in a vice underneath your drill press table. The trick will be to affix the vice so the bit is centered on the rod. Height and position of the drill in the vise can be accomplished with wood or metal cribbing to the correct starting height.

    Signing off now to construct a home operating theater.

    Best to all...

  2. #42
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    Quote Originally Posted by rons View Post
    If you were born 200 years ago it might have been more interesting...
    200 years ago YouTube was nothing but videos of Sacagawea and how to churn butter.

  3. #43
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    OP:
    Take cyanoacrylate and glue a 200 mm D thin-section bearing on a piece of steel 200 mm D, 30 mm thick.
    Rotate it via anything from a hand drill to any suitable motor and htd belt/v belt/string.
    Counterclockwise vs drill press rotation.

    After pre-drilling 0.5 mm undersize, use a carbide boring bar from horn to bore the hole true, in 0.01 mm increments.
    Each pass of 10 cm might take about 15 minutes.

    After doing all the work, and paying for the boring bar, the OP will have a great appreciation of why this type of feature is very expensive.
    == 3000$ for 4, 0.01 mm accuracy.
    == 6000$, 0.005 mm accuracy.

  4. #44
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    Quote Originally Posted by Lock View Post
    Remember you cant make chicken salad from chicken $hit but you can make chicken $hit salad.

    This made my day! lol thanks!

  5. #45
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    44 posts and apparently the OP still hasn't tried drilling a single hole.

  6. #46
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    Quote Originally Posted by Scottl View Post
    44 posts and apparently the OP still hasn't tried drilling a single hole.
    either that or he did try and he's still in the ER

  7. Likes TeachMePlease liked this post
  8. #47
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    Quote Originally Posted by Scottl View Post
    44 posts and apparently the OP still hasn't tried drilling a single hole.
    Naw...Op has started qty (7) new threads just on this one part.

    many more than just 44 replies.

  9. #48
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    Quote Originally Posted by Mtndew View Post
    This made my day! lol thanks!
    Glad I could help you out lol; I think I started saying that when I got in the USCG as a marine engineer and had to bubble gum patch multi million dollar pieces of machinery.

  10. #49
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    Quote Originally Posted by Larry Dickman View Post
    either that or he did try and he's still in the ER
    He can't get into the ER, he has to wait for 14 days in his car to make sure he is not sick before they will let him in.

  11. #50
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    I have used my Hardinge horizontal mill as a lathe. Put the bar stock in the collet and clamped the turning tool to the table. It didn't seem to notice the difference. I've also done the reverse and milled in a lathe. Make the best with what you have. I've seen some pretty amazing things that guys have done with a hammer, a hacksaw blade, and a rusty file.

  12. #51
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    Quote Originally Posted by Aaron View Post
    I have used my Hardinge horizontal mill as a lathe. Put the bar stock in the collet and clamped the turning tool to the table. It didn't seem to notice the difference. I've also done the reverse and milled in a lathe. Make the best with what you have. I've seen some pretty amazing things that guys have done with a hammer, a hacksaw blade, and a rusty file.
    I know I was impressed with the ARC reactor.

    tony.jpg


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