This KNOWLEDGE Will Ease Your Pain and Suffering When Attempting to Machine Perfect Parts

Comments · 613

• TR

  @trevorgoforth8963 · 2 years ago

  Why do I feel like this video was intended to be an internal training video for Barry and some how got leaked on YouTube 😂

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• PH

  @philipstevens7727 · 1 year ago

  The whole video is to make all the people here in comments look stupid. Would’ve been a descent comparison if all the parameters were the same like how you said the “feed rate will be locked in place” and then changed it. After the first piece you changed the macro, went from 750 sfm and cut it in half to 375 sfm, then stepped down the depth of cut from .030 to .020, then changed the feed from .004 to .0024 and all descending in that same order from a steel bar with a large radius to carbide with the smallest radius. <br><br>A real test by a real machinist with real world costs who wants to help a novice get better at his craft and not try to push product would be to leave everything EXACTLY the same and run with it with a vibration meter on the base, that’ll actually show you something.<br><br>Bet me that I can’t do better than your best ra with a steel bar and the middle insert on the same machine if ra is what your going for and you’ll loose and you know it, that’s sad and no way to pass along any kind of knowledge to “ease the pain….” of chatter. I wanted to see the test to compare the differences but there was no comparison. Instead heard a slow way of saying if you turn everything way down and have a sharper bit with a stiffer bar things will improve, could do that with one bar and insert and changed &nbsp;parameters like you did to reduce chatter for improved ra.<br><br><b>**Dont be mislead, watch some other videos, don’t buy expensive tooling you don’t need in place of knowledge or knowledge that’s shadowed for their gain**</b>

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• BE

  @bekcnc5275 · 2 years ago

  The comparison between the carbide shank and a dampened shank would be very cool.

  98

• SH

  @shawnhuk · 2 years ago

  So, the moral of the story - start with the most expensive tool imaginable - a solid carbide boring bar.

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• EH

  @ehinders2000 · 2 years ago

  It would also help to turn the OD after finishing the bore so the material is more rigid

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• GE

  @GeraldWentland · 2 years ago

  As a experienced oil field machinist used to doing deep bore work<br>If your looking for a good finish use a 55 degree D insert and back bore that same cut from inside to the face<br>Chips will stay behind tool<br>No chip rub or damage and it will be way better

  161

• MI

  @Midwesternlifestyle · 2 years ago

  my shop won&apos;t buy anything smaller than 1/32&quot; R inserts. my supervisor doesn&apos;t want to be bothered with improvements to the shop or ordering stuff so even what we do carry runs out a lot and we still get told to get parts done somehow.<br> &nbsp;which is why i&apos;m leaving manufacturing and going into IT. hopefully i can make enough money to put a CNC in my garage and start a little shop doing custom gun stuff and R&amp;D for my own pet projects.

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• TJ

  @TJ-wg3ud · 2 years ago

  Okuma variable spindle (M694/M695) works awesome for getting rid of chatter. I still do everything I can with tooling/ programming but I haven’t had to duct tape a strap clamp to a boring bar since I started using variable spindle 😂.

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• AD

  @adammiller4879 · 2 years ago

  Something to also take into consideration with insert geometry and chatter, a rule of thumb, you must go as deep as the radius of your insert in order to reduce chatter, 👍

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• TU

  @tuttebelleke · 1 year ago

  An old colleague who freaked about vibrations on the late, solved about all of them with rubber and sand. &nbsp;He had a whole box full of rubber parts of all kind, seals, inner tires, O-rings,.... He fixed them over or inside the part to be machined, added sometimes some more, until he eliminated the vibrations. &nbsp;He had also a set of selfmade cutting tools that he turned hollow at the end and filled with sand or oil and sand.

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• GZ

  @gzuscry · 1 month ago

  You know you could&apos;ve reduced the vibration by tacking on the end that sticks out a custom big block of metal to further reduce resonance. That end was pretty big and enough to contribute to your chatter significantly.

  1

• IM

  @imapersonnotachanneldammit · 1 year ago

  <a href="https://www.youtube.com/watch?v=mn7tkp2gcI8&amp;t=768">12:48</a> &quot;I also changed the rules of the game, but thanks for watching&quot;

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