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Type: Posts; User: gregormarwick

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  1. Yeah, that's what I understood from your previous...

    Yeah, that's what I understood from your previous reply. It's a nice trick, but still requires an explicit vertex or point to constrain the perpendicular line to, and you don't always/usually have...
  2. No picture, it's just a typical example. You're...

    No picture, it's just a typical example. You're on the right track anyway. POI could be either, again just an example.

    You could use a 3D sketch instead of projected one, but it would only be a...
  3. That's a very simple example. I'll give you one...

    That's a very simple example. I'll give you one that is typical for me.

    Say I have a hole at an arbitrary angle to a surface. The hole intersects another feature at the bottom. I need to know the...
  4. Comparison of measure tools in 3D cad systems

    I'm hoping to get some opinions on the functionality of the measurement tools in everyone's cad software.

    I am familiar with Solidworks and NX, so I want to know about the rest.

    Our workflow is...
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    There are endless choices for a shoulder mill...

    There are endless choices for a shoulder mill system that is more economical than R390. If you want to stick to sandvik, R490 has twice as many edges and performs very similarly for basic...
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    Poll: This logic applies to pretty much everything in a...

    This logic applies to pretty much everything in a machine shop. It took me a long time to realise it too.

    Time is the most valuable commodity, and the single greatest expense. Buying cheap tools...
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    Poll: Depends on your use case. The options you...

    Depends on your use case.

    The options you listed imply production machining, and of those I'd choose the One-Lok.

    That's not the world I live in, so I voted "Other" - for low qty flexibility...
  8. This is something that has bothered me for a long...

    This is something that has bothered me for a long time about Fusion.

    It's hard to make the case objectively that the UI is bad. It's fairly functional and efficient. But it doesn't feel...
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    Have you read this book from Sandvik?...

    Have you read this book from Sandvik? https://www.amazon.com/Modern-Metal-Cutting-Practical-Handbook/dp/B000ARWOFM

    If you have, and it did not provide the answers you are looking for, then I doubt...
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    APT (programming language) - Wikipedia...

    APT (programming language) - Wikipedia
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    That's really cool. I do though have to...

    That's really cool.

    I do though have to disagree with your premise that you cannot do the same with a modern cad-cam system - most provide methods of generating toolpaths programmatically, whether...
  12. Freecad uses OCCT as it's solid kernel, which did...

    Freecad uses OCCT as it's solid kernel, which did come from Euclid. A number of other dependencies can also be traced back to commercial development, like Coin3D, it's visualisation library.
    ...
  13. You're sidestepping my point. I'm not about to...

    You're sidestepping my point.

    I'm not about to switch to Freecad for my paying work, and I'm not advocating for anyone else to do so either - I made that completely clear.

    My point was, very...
  14. Not sure where you're going with that. I've been...

    Not sure where you're going with that. I've been following the project on and off for about the last decade, and nothing has changed significantly about the workflow.

    With that in mind, it's a...
  15. That is extremely uncharitable. I'm not about to...

    That is extremely uncharitable. I'm not about to switch to it as my main any time soon, but to say that it sucks and nobody "puts any good stuff in it" really just exposes your own ignorance about...
  16. There is a legitimate reason for that though, and...

    There is a legitimate reason for that though, and it's covered in the relevant standards for thread undercuts.

    Simply, fine finish to mitigate the risk of stress risers at what is the most...
  17. It's a metric part. All those odd dimensions...

    It's a metric part. All those odd dimensions convert to a nice round metric number, probably reverse engineering from a physical part by someone who had no idea what the actual tolerances should be....
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    There were accusations of that thrown around by a...

    This may well be true but was there not a moderator of this parish who insisted that Seamoss and EG were also you?[/QUOTE]

    There were accusations of that thrown around by a few.

    Seamoss and...
  19. If you've ever used sandvik's silent tools then...

    If you've ever used sandvik's silent tools then you know that they are worth their weight in gold. If not, then I am certain you will think they are a waste of money.

    One of the fundamental...
  20. I've done a few spindle bearing replacements over...

    I've done a few spindle bearing replacements over the years, did a largish lathe just recently.

    From what you've written, I'd say you can handle it. Lathe spindle construction is not complicated;...
  21. Pretty much, yes.

    Pretty much, yes.
  22. If you're talking about this thread...

    If you're talking about this thread, I am user gregorANU4T (automatically generated name) who was posting.
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    Nice wall of text. Totally doesn't read like...

    Nice wall of text. Totally doesn't read like projection and bitterness from personal experience. Not one bit of useful advice for op contained therein.

    Learning new skills and retaining old ones...
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    Years ago when I was very green at this I broke a...

    Years ago when I was very green at this I broke a 3" drill bit while drilling out a piloted hole in the radial arm drill. Too big of a pilot hole and too much feed, it took a bite and shattered in...
  25. I used to have a CT40 and the main spindle only...

    I used to have a CT40 and the main spindle only indexed, no C axis. I don't know if full C axis was ever an option on that lathe? If your lathe actually does have a C axis, it should have a brake on...
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