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  1. Hi All: For those who are unfamiliar with the...

    Hi All:
    For those who are unfamiliar with the process, here is a synopsis of MIM:
    Metal powder is mixed into a plastic or wax binder and processed into pellets.
    The aggregate is molded in an...
  2. Have any of you done a Titan metal injection molding project? Can you give me a lead?

    Good morning All:
    I have a customer for whom I designed and prototyped a bunch of parts that are perfect for metal injection molding, going into production.
    It's a dental project, and the ideal...
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    Hi Tatertots: For the type of shop you are...

    Hi Tatertots:
    For the type of shop you are describing, and for the class of work you want to be able to do, I would be looking for a "Teach" or "Toolroom" lathe ...something like the Haas TL1...
  4. Hi janvanruth: As a moldmaker I've had to cut a...

    Hi janvanruth:
    As a moldmaker I've had to cut a lot of 420 M stainless; it's one of the more common steels used for plastic injection molds.

    Here's my experience:
    For straightforward turning no...
  5. Hi there Zahnrad Kopf: Are you interested in...

    Hi there Zahnrad Kopf:
    Are you interested in trying a simple empirical test?
    How about if each of us cuts an identical form tool on a single stick of HSS; you put your form on one end, send it to...
  6. Hi Orionsgn: All good posts here; I'll just add...

    Hi Orionsgn:
    All good posts here; I'll just add a few tidbits from my own experience ( make lots of tiny stuff).

    I will often take the insert and nip off the whole tool nose radius, then diamond...
  7. Hi kustomizer: As Screwmachine and others have...

    Hi kustomizer:
    As Screwmachine and others have pointed out, your first step is going to be to find out whether it's an epicyclic gear train or an involute or some hand carved weirdass bastard...
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    Hi again Leviathan: As others have pointed out,...

    Hi again Leviathan:
    As others have pointed out, basic wire EDM is quite a bit less challenging than basic sinker EDM to make the machine go and do straightforward stuff so long as the machine is in...
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    Hi tayamo1: You DON'T want to have a 4 jaw self...

    Hi tayamo1:
    You DON'T want to have a 4 jaw self centering chuck unless your stock is perfectly (or almost perfectly) square.
    If it's out even 50 microns it will effectively only be a 2 jaw chuck,...
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    1,089

    Hi Leviathan: You wrote: "the older (late...

    Hi Leviathan:
    You wrote:
    "the older (late 1990s) machines required a bit more finesse and tribal knowledge. Is that not the case?"
    Yes that is the case; one of the fundamental changes in ease of...
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    Hi birdus: Send it out to a laser welder....

    Hi birdus:
    Send it out to a laser welder.
    Titanium is easy to weld...this sounds like a 15 minute repair.
    Laser welding gives you great control, almost no heat affected zone, microscopic weld...
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    Hi Zahnrad Kopf: Did you glass bead them to...

    Hi Zahnrad Kopf:
    Did you glass bead them to knock off the loose tungsten carbide grains before you ground the rake on them?

    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME...
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    Hi hansvandongen: Here you go...pics of my shop...

    Hi hansvandongen:
    Here you go...pics of my shop built T&C grinder.
    For scale reference, the mag chuck on it is 4" x 7".
    The table runs on balls and is made of A-2 hardened to 60 RC.
    Obviously,...
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    Hi TheGreatJon: The Swiss shop in California...

    Hi TheGreatJon:
    The Swiss shop in California that I worked closely with for a number of years swore by their Agathon grinders.
    Another Swiss shop I worked with, liked and used Christen grinders...
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    1,659

    Hi Zahnrad Kopf: I'm curious; have you had good...

    Hi Zahnrad Kopf:
    I'm curious; have you had good results with wire EDM cut carbide for cutting tools?
    I've always been disappointed with their longevity compared to ground ones.

    There have been a...
  16. Hi praff: Have you considered getting a really...

    Hi praff:
    Have you considered getting a really high end used machine like a Deckel FP1 or FP2 and maybe rebuilding that?
    Expensive for sure, but you'd have a solid accurate machine for life, and...
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    Hi All: Just for curiosity's sake I grabbed a...

    Hi All:
    Just for curiosity's sake I grabbed a couple of DME and National pins I have in stock and checked them under the microscope.
    The DME pins are centerless ground and the grind marks are...
  18. Hi mazzotta.al: You wrote: "but how do you know...

    Hi mazzotta.al:
    You wrote:
    "but how do you know ..."

    Short version is....you don't.
    As a process engineer, you choose your raw stock for the attributes you want, if one of those is a complex...
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    Hi lrg: I've always just used steel settings and...

    Hi lrg:
    I've always just used steel settings and had no difficulties.
    But I never tried to optimize for speed or anything.
    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME...
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    Hi Cole2534: I always think of it this way: W...

    Hi Cole2534:
    I always think of it this way:
    W know that a pair of gears of the same Diametral Pitch and Pressure Angle will mesh together correctly regardless of the number of teeth in each gear....
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    Hi EPAIII: Are you referring perhaps to...

    Hi EPAIII:
    Are you referring perhaps to "Parallel Depth Bevels"?
    According to one of the more ancient gear books I have, these were developed in World War 1 to enable British armaments companies to...
  22. Hi Gary: Can you get access to a Shadowgraph? ...

    Hi Gary:
    Can you get access to a Shadowgraph?

    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME
    Vancouver Wire EDM -- Wire EDM Machining
  23. Hi All: Wire cutting these is a possible...

    Hi All:
    Wire cutting these is a possible solution but you need to find a fine wire shop and there are relatively few around.
    If the longest of these parts are only around 4" and change, you can...
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    Hi Emissary: You are in a hard place not of your...

    Hi Emissary:
    You are in a hard place not of your own making, and you have my sympathy for your situation.

    Here's how I see it:
    You have uncovered an issue which has implications for the...
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    Hi mountie: You wrote: "If you give Milland a...

    Hi mountie:
    You wrote:
    "If you give Milland a cookie...."
    Well I guess then I'd have to give EVERYONE a cookie...(and a beer).
    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME...
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