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Type: Posts; User: gregormarwick

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  1. Replies
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    1,551

    I was in a bad mood when I responded previously,...

    I was in a bad mood when I responded previously, I apologise. Just finished a 36hr spell at work finishing up a bastard of a job, too wired to sleep now...

    Anyway, to each his own, yes I agree,...
  2. Replies
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    1,551

    This is completely retarded. I had a boss many...

    This is completely retarded. I had a boss many years ago that asked me why I needed a window at all. You sound just like him.

    Unless you're making really simple shit, then you need to see what's...
  3. I am not aware of any such issues. A solid in...

    I am not aware of any such issues.

    A solid in any modern cad software will be defined and handled within the kernel exclusively using double precision floats regardless of the representation...
  4. Simply, we were off maintenance with an old...

    Simply, we were off maintenance with an old version, and I had a new 5ax millturn coming in that I didn't want to write the post for myself from scratch.

    Got a good deal for a three year...
  5. Replies
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    4,783

    You're not exactly disproving his point...

    You're not exactly disproving his point...
  6. I was in the same situation last year. I opted to...

    I was in the same situation last year. I opted to stick with FC, but I am deeply invested in it and moving everything to a new software is going to be a monumental amount of work. In a few years when...
  7. Yep, I put a Sino DRO on a mill very close to 20...

    Yep, I put a Sino DRO on a mill very close to 20 years ago, and although the machine has changed hands at least twice since, I know who owns it and the DRO is still working perfectly.

    I have one...
  8. I understand the reasons why, that's not the...

    I understand the reasons why, that's not the point.

    My point was that all of my customers model this way, presumably as policy, so that if any of them ever send me a model to use for manufacture I...
  9. Whenever I am designing parts internally, I model...

    Whenever I am designing parts internally, I model them exactly how I want the final part to be, then I use PMI to apply symmetric tolerances and use model to manufacture, maybe a print with...
  10. This is effectively what you're doing when you...

    This is effectively what you're doing when you use a height setter and a haimer, except the height setter + haimer is easier, quicker, and more accurate.
  11. Replies
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    When running with the cutter offset, the flatness...

    When running with the cutter offset, the flatness improves as the diameter of the cutter increases, or as the stepover decreases.

    Problem is the floor will be concave next to a wall, and the...
  12. I wouldn't pay much attention to that book. Years...

    I wouldn't pay much attention to that book. Years ago I bought a copy, because the word was that it was the book to read if you wanted to get good. I probably opened my copy three or four times. I...
  13. If you're running a cnc mill and are not using at...

    If you're running a cnc mill and are not using at least a dial type height setter and a haimer, then you are wasting huge amounts of time.

    And yes, not using the Z work offset is ridiculous.
  14. Doing that with a chunky old boring head is still...

    Doing that with a chunky old boring head is still pretty hit and miss. You can move it a tenth, but it's still a hope and a prayer that it's going to cut a tenth. Takes time to set, very limited to...
  15. ITS-Bore is made by, or under license from,...

    ITS-Bore is made by, or under license from, D'Andrea. The fine boring heads are identical to and interchangeable with D'Andrea Testarossa series heads and the Modulhard'Andrea tooling system.

    The...
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    Chester are an importer of garbage tier Chinese...

    Chester are an importer of garbage tier Chinese manual machinery. That's their core business. I strongly suspect they have zero or low single digit numbers of those machines deployed on the ground....
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    Chester and Hermle in the same list is a huge red...

    Chester and Hermle in the same list is a huge red flag as to the validity of your shortlisting process...
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    I don't know whose idea it was to put the tracker...

    I don't know whose idea it was to put the tracker in there, but it sounds like someone is looking to create a problem.

    Personally, I would have more faith in the accuracy of the scale than the...
  19. I always run the actual size holder as much as...

    I always run the actual size holder as much as possible.

    I was kind of surprised to find that Schunk don't have a -F 6mm holder, they have 6mm on just about every other interface - I have a few...
  20. Assuming you have the original transmission on...

    Assuming you have the original transmission on your retrofit and haven't gone direct drive, the Mastiff will handle a much bigger cut with a stronger insert.

    If you're using Sandvik, get a...
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    My experience using insert drills in aluminium is...

    My experience using insert drills in aluminium is that you have to either massively exceed the "correct" chipload, or massively reduce it. I run a 50-80mm drills quite frequently on parts we make out...
  22. First of all, you have to be cutting VERY small...

    First of all, you have to be cutting VERY small threads to be worrying about single digit microns. As in, way below the application range of laydown threading inserts.

    For a typical thread that...
  23. I do this all the time, but only with Sandvik...

    I do this all the time, but only with Sandvik inserts. They have never let me down, but I have been bitten by others (Vardex in particular, have proven to not be reliable for this).

    Especially on...
  24. Maybe I missed it, what tool did you have? My...

    Maybe I missed it, what tool did you have?

    My favourite small feedmills are Tungaloy dofeed.
  25. Agree with this. I have had the same experience...

    Agree with this. I have had the same experience with 12mm x 50mm 3fl in 6061T6. Brand new endmill squeals, and absolutely nothing will stop it, fades when they have dulled a bit, but flip side is...
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