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  1. Thread: Wire EDM HAZ

    by implmex
    Replies
    4
    Views
    367

    Hi again Radar987: When I was an apprentice...

    Hi again Radar987:
    When I was an apprentice moldmaker, I was taught that a principle to apply whenever possible was to use two different steels of different hardnesses if the components were going...
  2. Thread: Wire EDM HAZ

    by implmex
    Replies
    4
    Views
    367

    Hi Radar987: The HAZ with a modern machine will...

    Hi Radar987:
    The HAZ with a modern machine will be microns.
    You should be good.
    What kind of tool steel?
    D2 has been used for punch dies forever and has been successfully wire cut for decades so...
  3. Replies
    11
    Views
    826

    Hi drcoelho: There was a very popular and very...

    Hi drcoelho:
    There was a very popular and very skilled past contributor to this forum who made indexers and rotary fixtures for high precision toolmaking.
    His name was Ray Newbould (now sadly...
  4. Replies
    10
    Views
    1,128

    Hi All: This all makes sense...when you make the...

    Hi All:
    This all makes sense...when you make the water less conductive (more resistive), you strip ions out of it by running it through the DI bottle...the same ions that can promote galvanic...
  5. Hi David_M: So what you're recommending is to...

    Hi David_M:
    So what you're recommending is to tripodize the load so the big slide and lock is pushing between two smaller ones that are pushing the other way.
    Now that is a brilliant idea!

    It...
  6. Hi Peter: I think I understand what you're...

    Hi Peter:
    I think I understand what you're advocating...correct me if I'm wrong.
    You are suggesting cutting a compound taper onto the back of each slide and cutting a matching compound taper on the...
  7. Hi MushCreek: Yeah I've used those and normally...

    Hi MushCreek:
    Yeah I've used those and normally I like them when my only objective is to hold precise alignments between Hotside and Coldside.
    However, what I'm trying to do is counteract twisting...
  8. Hi Tom: I hadn't had a chance to check out this...

    Hi Tom:
    I hadn't had a chance to check out this thread again until now so I was unaware you had commented...my apologies.

    My issue with the mold design is not the forces that act on it when it...
  9. Hi Milacron: That calculates out to around 1.5...

    Hi Milacron:
    That calculates out to around 1.5 hours per day if I've done the math right.
    That's pretty low mileage...I bought new in 2011 and I have almost that many hours on mine.
    I don't use it...
  10. Replies
    11
    Views
    812

    Hi icecats: I have had success re-hardening a...

    Hi icecats:
    I have had success re-hardening a cut-off Allen key , grinding a small dish on the end face to get some positive rake and forcing it through on the lathe with the tailstock for one-time...
  11. Hi Tom: That would be a brilliant solution if...

    Hi Tom:
    That would be a brilliant solution if this mold had hydraulic slides but it's going to run mechanical cam pins.
    If you are unfamiliar with how they work, a cam (or horn) pin is an angled...
  12. Moldmaking technical question: preloading taperlocks

    Good morning all Moldmakers:
    I have a mold build going on right now and I have a technical question for all you experienced designers and builders.

    I need to run two slides for two different...
  13. Hi All: I'm going to be the contrarian voice...

    Hi All:
    I'm going to be the contrarian voice here and recommend to buy if the OP thinks it is a good fit for his needs.
    I say so because it's plain, from his history on this thread, that he knows...
  14. Hi MetalArtistCandy: Cryogenic hardening follows...

    Hi MetalArtistCandy:
    Cryogenic hardening follows conventional heat treatment.
    In simplistic terms it "finishes" the conversion of Austenite to Martensite and acts to "improve" the physical...
  15. Replies
    10
    Views
    1,128

    Hi KK80: I agree with all who have advised...

    Hi KK80:
    I agree with all who have advised checking the resistivity of the water, and the recommendation to wash the parts before they go into the wire EDM to keep from contaminating the water with...
  16. Hi Fal Grunt: I'd make this on the wire EDM but...

    Hi Fal Grunt:
    I'd make this on the wire EDM but if you don't have one and can't get access to one, that's not much help.

    But you do have a surface grinder.
    So I'd just hog out what you can,...
  17. Replies
    21
    Views
    2,141

    Hi KilrB: You wrote: "We got 4 of the smaller...

    Hi KilrB:
    You wrote:
    "We got 4 of the smaller punches ground from carbide (expensive) but no one would quote the die block.

    I've got a piece of Leech LC112 waiting for some time in our CUT-200....
  18. Replies
    19
    Views
    2,557

    Hi TonyStark: You wrote:"But if you can buy 50...

    Hi TonyStark:
    You wrote:"But if you can buy 50 printers at $5k/piece, that time per part drops to just a few min per part"

    But if you calculate the energy budget for those 50 machines you are...
  19. Replies
    21
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    2,141

    Hi KilrB: Some things I'd consider: 1) I...

    Hi KilrB:
    Some things I'd consider:

    1) I notice the strip appears to have been slit...have you checked if the edges are still soft (per digger doug post # 2 and Milland post # 4)?
    I wonder if...
  20. Not to worry TeachMePlease: Your secrets are...

    Not to worry TeachMePlease:

    Your secrets are safe with me.

    Now what size was that again?
    Majestic, Unremarkable, or Pathetic?

    It's a mad mad world!

    Cheers
  21. What can I say??? Cheers Marcus...

    What can I say???

    Cheers

    Marcus
    www.implant-mechanix.com
    www.vancouverwireedm.com
  22. 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...
  23. 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...
  24. Replies
    12
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    1,515

    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...
  25. 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...
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