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  1. Replies
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    1,874

    Marcus We haven't done much and it's been a...

    Marcus
    We haven't done much and it's been a while since we did any sinker EDM in copper, but our experience is a lot of electrode wear (poco 3 graphite) and its as slow as carbide to erode. So we...
  2. 45,000 RPM air turbine spindle speeder for...

    45,000 RPM air turbine spindle speeder for milling graphite electrodes with a .005" end mill
    275658
  3. Weird. Table height shouldn't matter. Makes me...

    Weird. Table height shouldn't matter. Makes me think something is fishy with the elevating screw. Flexing? Something shifting when measuring? Screw worn out in that area?
  4. Replies
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    109,478

    7 years is a long tome to wait on a reply. He...

    7 years is a long tome to wait on a reply. He probably already has finished the job by now. ;-)
  5. A bit of milling in some mold cavities. Right...

    A bit of milling in some mold cavities. Right side finished, middle and left side just roughed out.
    275545
  6. Thread: Wire EDM barreling

    by RJT
    Replies
    3
    Views
    321

    Wire tension correct? Wire speed? What height and...

    Wire tension correct? Wire speed? What height and what tolerance are you trying to achieve? How may passes are you using, what size wire? They all will have an effect.
  7. Replies
    7
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    356

    Did you use some kind of extension to hold your...

    Did you use some kind of extension to hold your electrode, or just use a long electrode? Concerned about electrode straightness and being on center that far away from the holder.
  8. Replies
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    Actually not a skimmer, but a reverse engineered...

    Actually not a skimmer, but a reverse engineered home made coalescer . We have used skimmers , both belt and disk, and they work OK, but there is more moving parts and maintenance involved. The...
  9. Replies
    7
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    356

    Marcus, Thanks for the advice, we use Electrodes...

    Marcus,
    Thanks for the advice, we use Electrodes for our EDM supplies, and I will consult them and Mitsubishi (our machine is an EX8 CNC sinker) on advice. We have very little experience with sinker...
  10. Replies
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    356

    Tapping 4 -40 threads in titanium

    This wouldn't be an issue except the treads are down inside a recess 3.75 " deep. The holes need to be tapped .220 deep and the hole can only be .325 deep. so I'm not too confident in a bottoming...
  11. Replies
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    627

    My guess is a surge in incoming power(lightning...

    My guess is a surge in incoming power(lightning storm recently?) took out the communication board in the controller. Do you have cable running up in the rafters from the PC to the machine? We had...
  12. Replies
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    900

    I have a SWM Spacesaver 2003 that we took off a...

    I have a SWM Spacesaver 2003 that we took off a lathe that worked fine, we just didn't use it enough to justify the floor space. 274798
    274799
  13. Replies
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    1,874

    For a one of a kind, drill it,then make an...

    For a one of a kind, drill it,then make an electrode the shape you need and sinker EDM the shape into the bottom of the hole. If you need lots of parts, buy or make a form tool.
  14. Take a variable out of the mix and go with solid.

    Take a variable out of the mix and go with solid.
  15. Replies
    3
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    458

    Machining duplex 2205 stainless

    UNS S32205 ASTM A276

    The thread I started yesterday was incorrect, material is not 304 but what is stated above. How does it compare with machining 304? Specifically, turn, face, drill ,bore and...
  16. Start with schedule 160 1" seamless tube, or solid rod ?

    Part is 304 stainless, finishes at 1.125 +/- .005 OD, .862 +.003 - 0 ID, 3.25 long, ends perpendicular to bore .002 max and ends flat within .001, bore to OD runout .0025 max. Have not got pricing...
  17. I would figure out the cost to package and ship...

    I would figure out the cost to package and ship it , add to the cost of manufacture and keep the job myself. If that is not possible, you could sell the fixtures and know how, but the customer will...
  18. Replies
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    4,052

    273803273804273805273806 Here is my DIY...

    273803273804273805273806

    Here is my DIY system.

    Fist picture is the float, 4 plastic bottles, pvc pipe to draw coolant from the top of the tank. Actual point of suction is at the center, done...
  19. Replies
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    4,052

    On vacation this week, I'll do it next week. ...

    On vacation this week, I'll do it next week.

    Sent from my moto z3 using Tapatalk
  20. Replies
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    4,052

    Small submersible pump, some plumbing fittings, a...

    Small submersible pump, some plumbing fittings, a 5 gallon settling tank , a float, a diffuser, and some hose. No rocket science. Less than $100. Of supplies per unit. I'll post a sketch if anyone...
  21. Replies
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    4,052

    Been using Qualichem Xtreme Cut 251C for several...

    Been using Qualichem Xtreme Cut 251C for several years in several machines and very happy with it. Tried several competiors and have stuck with Qualichem. We made our own coalacers after seeing the...
  22. Replies
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    782

    I second the Berkshire recommendation. We use...

    I second the Berkshire recommendation. We use them for final cleaning when we need "white glove" results.
  23. Turn OD finished accurately, drill under size,...

    Turn OD finished accurately, drill under size, wire EDM a fixture to hold the OD and wire EDM the ID. Simple and accurate. I don't think a 1mm arbor is feasible , and any method of spot drilling,...
  24. Replies
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    We have had similar thing happen, and concluded...

    We have had similar thing happen, and concluded the same thing, something non conductive in the material. Did the same thing, cut from the other direction to get through it. Had some glass bead stuck...
  25. Thread: WEDM Tank Ligting

    by RJT
    Replies
    5
    Views
    683

    We like these in our wire EDM machines ...

    We like these in our wire EDM machines

    FLP-1113-6 Sawfish™ | Halogen Lighting Products Corporation

    can get a magnetic mounting bracket as well.
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