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Midwest

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Posts posted by Midwest

  1. How about shutting the door B4 the coolant turns on. It's happened twice since my last post. bonk.gifbonk.gifbonk.gif

     

    Or better yet getting an office guy out watching and getting him with the coolant. biggrin.gifbiggrin.gif

     

    Then there is the EDM flushing cross drill hole that didn't get plugged. bonk.gifbonk.gif

  2. Offset your circle a little smaller than your cutter dia as many times as necessary and trim them to make a short 2d toolpath. Chain the line work and rotate and copy for the 3 other corners.

     

    Another way would be to use a pocket tool path with your circle as an Island.

     

    HTH

     

    cheers.gif

  3. Yes, may times. I would say you get a nice finish, nothing a polishing stone can't fix if you want a better finish. It also depends on the tapper you require. I have finished them going in a circular patter(contour ramp) and vertically(surface radial) tool path.

  4. Two Minnesota guys rent a boat and go fishing in a lake. They are amazed at the number of fish that they caught that day, so one says to the other, "We'll have to come back here tomorrow!"

     

    The other asks, "But how will we remember where this spot is?"

     

    The first guy then takes a can of spray paint, paints an X on the bottom of the boat, and says, "We'll just look for this X tomorrow."

     

    The other guy says, "You idiot! How do you know we'll get the same boat?"

     

     

    flame.gif

  5. You have to extend the spline so it is longer than the parent or slab surface to get it to trim. I think this might be your problem. If you download my file, I think I blanked the 3 lines I used to trim the 2 surfaces.

  6. Iskander teh Owl

     

    After you run the tool you do get a very slight working edge. If the tool chips you can see it very easily. I started cutting with only 3000 rpm's a few years back, you just have to slow the feed rate down. We build molds so we also do low quantities.

  7. Iskander teh Owl

     

    Try it some time you might be surprized. The tip might chip with some carbides. I have one now that has cut a lot of engrving without chipping the tip. The tool has to run true to last.

     

    cheers.gif

  8. For engraving I take an 1/8 dia carbide round or old em shank and grind a 3 sided pyramid cutter. I set the cutter grinder to 15 deg or 20 deg. most of the time and grind to a sharp piont. Step down of .002, step over of .004 for roughing and .001 - .002 for finishing. Feed of 10 ipm and a rpm 10,000. Cuts well in soft or hardened steel.

  9. Nothing is dumb........ When you back plot a test helix say 1.0 deep with a .100 step down does it draw a 360 degee rotation on the screen each time you push the "S" key? If so it sounds like a post problem then.

  10. ( CONTOUR RAMP )

    X0. Y-1.0156

    Z.1

    G1 Z.075 F15.

    G2 X-.8954 Y-.4792 Z.0578 I0. J1.0156 F9.8

    G0 Z.25

    M5

    G49 Z.25

    G91 G28 Z0.

    %

     

    I read the .075 difference on the print now this matches what your tool path does in Z.

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