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    It would be more complicated than that. If a...

    It would be more complicated than that. If a tool is broken, what condition is the part in? Does it have a broken piece of carbide in it, which will wreck subsequent tools? Need to have macro...
  2. It's an infinity symbol. They're calling for an...

    It's an infinity symbol. They're calling for an infinitely smooth surface.




    /s
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    I got a two year associates degree from a local...

    I got a two year associates degree from a local trade school, then jumped into the workforce.
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    Well no, I wouldn't line item them. You figure...

    Well no, I wouldn't line item them. You figure it into the price per part. Part number X, qty Y, cost $$, that's all they need to see. But a 6 hour job that uses up $300 in cutters shouldn't have...
  5. Can't speak to that specific coolant, but I've...

    Can't speak to that specific coolant, but I've used Hangsterfer's 5080 in mills, saws, and a surface grinder. Mixed with DI or distilled water. No rust, no stink, no scum to skim. Can leave it sit...
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    If you're cutting aluminum or plastic, ok, maybe....

    If you're cutting aluminum or plastic, ok, maybe. Cutting steel, stainless, Ti, superalloys... The cutters are billed to the job; they WILL be consumed on a regular basis. They're either included...
  7. If it's an option, try form tapping. Much more...

    If it's an option, try form tapping. Much more reliable.
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    Neat. Niche. Looks like there would be cosine...

    Neat. Niche. Looks like there would be cosine error in Z that would need to be accounted for.
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    Automatic toolpathing. Sure, there are some...

    Automatic toolpathing.

    Sure, there are some niches, with large families of very simple parts, where it can be advantageous, but not very often.
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    Semantics, but yes. Inflation is currently at...

    Semantics, but yes. Inflation is currently at 15% annual, when calculated by the 1980 standard.
  11. Ti alloy is more fatigue sensitive, and more...

    Ti alloy is more fatigue sensitive, and more notch sensitive, than steel. Just one tiny imperfection in the print and you'll get a crack starting to propagate.
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    Metals and Alloys - Young's Modulus of Elasticity...

    Metals and Alloys - Young's Modulus of Elasticity
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    This is true. It's easy to forget, and I've had...

    This is true. It's easy to forget, and I've had a hard time convincing senior engineers of this, but all steel is the same stiffness within a very small margin, regardless of the hardness.
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    Found a baby centering vise: Workholding for...

    Found a baby centering vise:
    Workholding for micro-machining
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    So yesterday I made some parts from 17-4 H900...

    So yesterday I made some parts from 17-4 H900 that were mostly a cone with a .015" thru hole and a .047" dia. x .062" long shank. I managed to hold the shank in soft jaws made from 4140 prehard, in...
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    I'm thinking 4140 prehard. Parts are Ti grade 2...

    I'm thinking 4140 prehard. Parts are Ti grade 2 and 90/10 Platinum Iridium.
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    Mill parts, as I mentioned. Yes, if "normal"...

    Mill parts, as I mentioned. Yes, if "normal" sized I would use soft jaws.

    I'm thinking of maybe a rectangular block with a slit and a clamping screw, to be a one-piece machinable vise. Hold it...
  18. No disagreement here. For a design of any...

    No disagreement here. For a design of any significant complexity, a properly made model is a prerequisite to a properly made print, but doesn't necessarily result in one. I tried autodimension...
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    Workholding for micromachining?

    I'm getting orders for smaller and smaller mill parts. I have some in the queue with features from .020" down to .005", and that are 3mm OAL. Are there good solutions off the shelf for gingerly...
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    Don't forget inspection equipment. Toolscope?...

    Don't forget inspection equipment. Toolscope? CMM? gauge block and pin sets. Metrology training.
  21. I played with a drafting table in my dad's...

    I played with a drafting table in my dad's basement in the 80's. Haven't touched one since, they're obsolete.

    Prints should be made from accurate solid models, modelled at the midpoint of...
  22. Did I miss where you mention what material you're...

    Did I miss where you mention what material you're cutting, and what your max RPM is?
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    You can buy blocks that are slightly oversized,...

    You can buy blocks that are slightly oversized, with the intention that you will grind them in to nominal to your preferred standards. I'd expect a couple tenths to a few thou over on all faces, but...
  24. Are you using a standard torx driver in a torx...

    Are you using a standard torx driver in a torx plus socket? That'll do it.
  25. I read that in Robyn William's voice. Fuck No!...

    I read that in Robyn William's voice.

    Fuck No! - Robin Williams - YouTube
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