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Type: Posts; User: implmex

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  1. Replies
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    Hi again All: Well I tried it. It runs slicker...

    Hi again All:
    Well I tried it.
    It runs slicker than snot...I'm a happy dude.
    It's boring time!!

    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME
    Vancouver Wire EDM -- Wire EDM...
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    Hi atex57: Who knew...I was completely unaware...

    Hi atex57:
    Who knew...I was completely unaware such bars were commercially available in such small sizes.

    Well...too late now; they're done and running and I have to confess I had fun making...
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    Hi Zahnrad Kopf: What I did was to put a flat on...

    Hi Zahnrad Kopf:
    What I did was to put a flat on the 1/8" broken cutter shanks and wire the corresponding flat into the socket that accepts them, so I can take the insert out and re-grind it without...
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    Hi Pete: Yeah, I usually just grind a split...

    Hi Pete:
    Yeah, I usually just grind a split blank to make a solid bar, and that's what I'd originally planned to do with this one too, but it was just so pretty and pristine when it arrived in the...
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    Making little carbide boring bars

    Good morning All:
    Well I wasn't feeling much like doing any REAL work this morning so I decided to play a bit today instead.
    I've always wanted to have some small carbide boring bars that can use...
  6. Hi Ballen: I've been looking at where this...

    Hi Ballen:
    I've been looking at where this thread is going, and I have a really basic question to ask you about your design.
    You've designed your unit with an enclosure...I presume to keep the dirt...
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    1,169

    Oh yeah; while I'm at it: A drawing is part of a...

    Oh yeah; while I'm at it:
    A drawing is part of a contract; together with an accepted purchase order it defines legally what the two parties to the contract are agreeing to do.
    Any ambiguity in the...
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    Hi again prangy89: I think a really great...

    Hi again prangy89:
    I think a really great learning exercise for engineering school would be to ask each mechanical engineering student to draw up a part for a real and existing mechanism, dimension...
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    1,169

    Hi prangy89: Often a perceptive designer who has...

    Hi prangy89:
    Often a perceptive designer who has been around machine shops will understand enough about how the part will typically be made to know where he (or she) must specify a callout to get...
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    1,169

    Hi All: Joe Miranda wrote: GD&T has not been...

    Hi All:
    Joe Miranda wrote:
    GD&T has not been the help to industry that the engineering community had hoped for. Notes on the drawing are usually much more meaningful than GD&T can EVER be.

    The...
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    Hi again drcoelho: The thing I've always found...

    Hi again drcoelho:
    The thing I've always found with attachments over dedicated machines is that as soon as you intend to use it more than occasionally, it becomes a PITA to set up and to tear back...
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    Hi drcoelho: The short answer is "no" The...

    Hi drcoelho:
    The short answer is "no"

    The reasons are many, but in essence, internal cylindrical grinding will be be a much better fit for some geometries than for others.
    A simple example is a...
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    Hi MULTUSB200: While I agree there is something...

    Hi MULTUSB200:
    While I agree there is something to be said for stacking and wire cutting the blanks and then putting on the chamfers and maybe putting in the holes afterward, you need to focus on...
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    Hi controlled_burn: You are correct; there's no...

    Hi controlled_burn:
    You are correct; there's no reason they should not be able to get it to 60-62 RC if it's A-2.
    If they accidentally decarburized it in HT the decarb layer should not be very...
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    1,510

    Hi Robert R: So the logical corollary to your...

    Hi Robert R:
    So the logical corollary to your example is that when it's a cast iron master used as the lap, there is no appreciable wear on the lap, whereas when the gear pair is run together with...
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    Good morning athack: This is super interesting,...

    Good morning athack:
    This is super interesting, and quite unexpected.
    I've always taken it as gospel that the lap must be a different material and softer than the workpiece so the abrasive grains...
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    Hi again Dee: No problem...I did catch the...

    Hi again Dee:
    No problem...I did catch the gently eye rolling sarcasm and understood it for what it was.
    I didn't see it as anything at all for me to get bent about; but I grabbed the opportunity...
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    Hi again Dee: You wrote: "I knew I was going to...

    Hi again Dee:
    You wrote:
    "I knew I was going to generate questions"

    Sorry about that, but that's what I always do when I'm confronting a problem I don't immediately know the answer to...it helps...
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    Hi Dee: Are you lapping for geometry or for...

    Hi Dee:
    Are you lapping for geometry or for finish or for both?
    How close are you to your goal before you begin lapping?
    How will you power the part or the lap? All by hand? Lathe and hand work? ...
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    Hi again all: The rest of the cut went...

    Hi again all:
    The rest of the cut went completely uneventfully.
    The skim cut went completely uneventfully too.
    I have NO idea what happened, but Brian's theory is the best I've heard so far.
    ...
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    Yeah Brian it sure does! Thank you for...

    Yeah Brian it sure does!
    Thank you for responding...as I said, I've never seen this before and I was frustrated and puzzled by the fight I was having trying to get through this.
    It's cutting just...
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    Strange buildup in the slot

    Good morning All:
    I had a weird new problem this morning I've never seen before.
    I'm wire cutting a simple rectangular cutout in a 4140 round shaft.
    All went well for the first 0.050" then I...
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    How much grind stock to leave??? Here's where...

    How much grind stock to leave???
    Here's where you're at in a nutshell:
    D-2 as others have remarked, is shitty to grind...leave as little as possible.
    D-2 is a very stable air hardening steel that...
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    Hi SMorris: Are you looking for examples where a...

    Hi SMorris:
    Are you looking for examples where a slug has touched a workpiece and burned a divot before it fell free?
    Are you looking for instances where a fixture arced against a workpiece or...
  25. Good morning Frank: You wrote: "If you grind a...

    Good morning Frank:
    You wrote:
    "If you grind a lot of small diameters and the NSK was not strong enough more than likely you are trying to grind too much too fast"

    Yes, that is certainly true...
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