Why is cnc machining so expensive? - Page 13
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  1. #241
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    Quote Originally Posted by Volitan View Post
    No way this person is for real lol
    The OP is most people nowadays..........................

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    Quote Originally Posted by g-coder05 View Post
    Oh not in my case.... If I interview someone I always ask first "Are you a machinist or just a CNC Setup, Programmer or Operator. I have a little Kennedy toolbox by my desk marked (Machinist test kit). The box has half of a small broken gear, A pitch gauge set, a flat fly cutter, a HSS blank, and several aluminum gear blanks, and a pair of safety glasses. I would set the toolbox on the table and ask "How many cranks in a dividing head for a full rotation"? The most common answer was "36?" as in they would question their own answer. I'd just shake my head, thank them for their interest and send them on their way. I just have no patience for button jockeys that bypassed the basic skills building blocks of the trade and then calls themselves a machinist.
    What a load of bullshit Why is cnc machining so expensive?

    Sendt fra min EML-L29 med Tapatalk

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    Just google the guy's username (ejronin) and you'll learn all you need to know.

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  6. #244
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    Quote Originally Posted by FredC View Post
    Once in a while you see someone that really cut costs on a government contract but he has a small business loan and does not make payments, does not pay for his material or tools then files for bankruptcy with a pile of cash in his pocket.
    Links to one of these opportunities? Errrmmmmmm... asking for a friend.

  7. #245
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    Quote Originally Posted by TeachMePlease View Post
    Just google the guy's username (ejronin) and you'll learn all you need to know.
    That will teach him to use the same handle as his twitter/facebook account!!!

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    This sounds like the owner that bought my dads shop. I stayed on for two years after the sale...... and at the time I left he still did not know why the designer couldn't send a file to the machine and the machine just cut it. He says protolabs does it!!!!!!

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    Quote Originally Posted by PegroProX440 View Post
    He says protolabs does it!!!!!!
    I was told from a semi reliable source that they had their own bespoke written software (I guess similar vein to Masteram FBM etc), where with a standard tool library, the software "autoprograms".
    Which is why certain threads or features (undercuts etc) they just cannot or won't do...

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    I'll believe any of the rumors about Protolabs when I see them. FeatureCam is based on the concept of feature based milling (MasterCams FBM). But it isn't plug and play, in either suite.

    R

    R

  12. #249
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    I had a customer one time, and I'm not making this up. They sincerely believed that all they had to do was give me a disk with the part on it, and I just plug the disk into the machine and parts just start coming out of a conveyer belt.

    College educated morons.

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    Quote Originally Posted by Nikolaiownz View Post
    What a load of bullshit Why is cnc machining so expensive?

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    Why is that? Are you one of those button jockeys?

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    Quote Originally Posted by g-coder05 View Post
    Why is that? Are you one of those button jockeys?
    Sure i push alot of buttons in my shop.

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    Quote Originally Posted by Larry Dickman View Post
    I had a customer one time, and I'm not making this up. They sincerely believed that all they had to do was give me a disk with the part on it, and I just plug the disk into the machine and parts just start coming out of a conveyer belt.

    College educated morons.
    A local company asked me to make some parts from a magnetic stainless (no other requirement for the material), evidently that was important for the application.Two years after delivery they called me and said they were starting to rust a bit. I went up to meet with the engineer (degreed), had to explain that since it was magnetic, that meant it had iron/steel in the alloy, and if they didn't care for it, the parts would rust. Then we went into the "big boss" office, and my remarks were repeated verbatim to the boss as I listened.
    But what do I know.......
    OTOH, I've worked with some really smart and talented engineers. Usually they have some real experience in world outside the office, and the arrogance has worn off or was never developed. Loved working with those people.

    I've used manual mills, lathes, turret lathes, drill presses and shapers (remember belt lacers for a lineshaft?) so I think cnc machining is actually not that expensive.

  18. #253
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    Too soon old, too late smart. Story of my life.

    Tom

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    I have a friend that is the right age to have been in shops when not every shop had cnc. They bought one and still quoted jobs as if there were still on manual machines. Until the competition acquired cnc's they made money like mad.

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  22. #255
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    Well Yes, and no.

    Today, maybe 80-90% of parts made on typical 3-axis VMCs could actually be made like that.
    Feed file ("diskette") in -> part comes out.

    There is zero reason most parts cannot be made like that.
    Somewhat less efficiently, at first, but much more efficiently as the sw catches up.

    Prediction:
    And it will.
    Reason is money.

    Today, the whole sw and machining scene is a mess, technically.
    This will change, likely quite quickly (<5 y), and will disrupt the machining industry, fast (<4 y) once one single provider makes a single half-assed working platform available on a per-part semi-open-source basis, aka 0.10$ / part for full sw.

    Other providers will then jump on it, and excellent results will soon appear at freemium costs like smartphone applets.


    Quote Originally Posted by Larry Dickman View Post
    I had a customer one time, and I'm not making this up. They sincerely believed that all they had to do was give me a disk with the part on it, and I just plug the disk into the machine and parts just start coming out of a conveyer belt.

    College educated morons.

  23. #256
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    Quote Originally Posted by hanermo View Post
    Well Yes, and no.

    Today, maybe 80-90% of parts made on typical 3-axis VMCs could actually be made like that.
    Feed file ("diskette") in -> part comes out.

    There is zero reason most parts cannot be made like that.
    Somewhat less efficiently, at first, but much more efficiently as the sw catches up.

    Prediction:
    And it will.
    Reason is money.
    I agree, and it will cause a significant talent shortage. When the entry to mid-level work is all automated, how do you develop high level skilled people for jobs that exceed the capability of the automation? When the "entry level" position requires twenty years experience or equivalent, how do you get there? You have to be able to afford schooling equivalent to twenty years on-the-job experience, which simply won't happen. When the old experienced people start retiring and dying off the industry will be left with a dearth of skilled people, and the industry's capabilities will be limited to what the software can do in the hands of inexperienced workers. We're already seeing some of that.

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  25. #257
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    Funny, these guys think its cheap:
    Why is CNC machining so inexpensive?

  26. #258
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    Quote Originally Posted by barbter View Post
    I was told from a semi reliable source that they had their own bespoke written software (I guess similar vein to Masteram FBM etc), where with a standard tool library, the software "autoprograms".
    Which is why certain threads or features (undercuts etc) they just cannot or won't do...
    My son showed me some of the protolabs parts for a company he worked for. They were simple prismatic parts and looked like crap for $$$.Ugly surface finish and no edgebreak / debur.

  27. #259
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    Quote Originally Posted by zero_divide View Post
    The OP makes me chuckle.
    On thursday i spent 5 hours programming and setting up.
    Then i went home.
    Heck, some of my parts take a couple days to design and cut, but it should only be 50 bucks for that custom part because the guy who shoots aluminum snot into a die to mass produce an inferior generic part that doesn't fit your needs 10 thousand at a time only charges 49.

  28. #260
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    Quote Originally Posted by super95awd View Post
    Holy crap! This person sounds like some of my customers. "Oh it doesn't just program itself?"
    Sounds like mine too. I wonder how many invoices he owes his suppliers LOL


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