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Type: Posts; User: Dan from Oakland

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  1. Ya could buy two and cut them up giving you four...

    Ya could buy two and cut them up giving you four pair with two mounting holes in each one. Then find a tiny Bullard to put them on!
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    "They are fairly easy to re sharp on a tool and...

    "They are fairly easy to re sharp on a tool and cutter grinder. just grind the leading edge back a bit. "

    Nothing could be farther from the truth. I'm certain that you know the involute form...
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    You might want to repost this in the Deckel...

    You might want to repost this in the Deckel section of PM rather than the General forum.
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    We would grind a space cutter that includes the...

    We would grind a space cutter that includes the included angle and the root radius. We use old involute cutters for things like this. As someone mentioned above- hog out the material with an end...
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    If you are adding straight water to your coolant...

    If you are adding straight water to your coolant tank, you are destroying the emulsion slowly but surely.
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    We use a fair number of files deburring gear...

    We use a fair number of files deburring gear teeth, so . . . This thread is somewhat of a shock to me- We regularly use file cards to clean files- wire in them is not hard and cleans up a clogged...
  7. Hopefully lesson learned- give it back and tell...

    Hopefully lesson learned- give it back and tell them to keep it. Take the $$ and go find a used real lathe and put it to work.
    Yea it will be used and have little things tweaked on it, but at least...
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    Larry is correct- at least here in earthquake...

    Larry is correct- at least here in earthquake country, unions are not allowed on gas pipe, so left and right hand couplings are used with a matching left and right hand thread nipple. The od of the...
  9. Just to clarify one point. By "cutter", its...

    Just to clarify one point. By "cutter", its iimportant to realize that this is a generating type cutter as in a hob or shaper cutter- not a tooth space cutter.
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    You can always drill the corners before you mill...

    You can always drill the corners before you mill the profile. Lay it out in cad and see how big an endmill will just come tangent to the corner radii. Even if ya drill em a little big, the tri lobe...
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    As ZK mentioned above- keep your shift factor...

    As ZK mentioned above- keep your shift factor positive- cut the 1.25 mod teeth with a positive profile shift. If you only have a 20 DP hob then. . . . Standard practice is to enlarge the blank...
  12. Certainly the gear mesh will tend to push the...

    Certainly the gear mesh will tend to push the table away from the pinion, and probably in a very repeatable direction. Begs the question where most of the wear is- on the table bearing or stationary...
  13. We have a Zero cabinet with lots of hours on it...

    We have a Zero cabinet with lots of hours on it so the door seals are funky. Its located in the welding and rebabbiting room and we get glass beads on the floor and dust from the cabinet. Zero...
  14. So what do you want to know? FYI there are tons...

    So what do you want to know? FYI there are tons of type A op manuals on e-bay for not that much money, and it really does not matter which one you get as they all setup pretty much the same way.
    ...
  15. Agree 100% as long as you can maintain an oil...

    Agree 100% as long as you can maintain an oil film of some sort to prevent further wear, and that's the elephant in the room in this case.
  16. If you have G54, why not simply use additional...

    If you have G54, why not simply use additional work offsets for your cutoff step? kinda like you have now but loop the sub after each G54, G55, G56 and G57. AFAIK, G10 is useful if you run out of...
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    There's a song- "know when to hold em, know when...

    There's a song- "know when to hold em, know when to fold em". Good luck!
  18. Just from a general engineering standpoint, what...

    Just from a general engineering standpoint, what prevents metal to metal contact between the table and underlying structure on startup? I imagine the weight of work pieces on a 100" machine are not...
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    It machines nice, but be aware it melts very...

    It machines nice, but be aware it melts very easily and that will limit your spindle speed. A cold air gun will help but you won't be screaming thru it like an aluminum part. if any quantity at...
  20. Get a copy of the current NEC and read the durn...

    Get a copy of the current NEC and read the durn thing. It's what the inspector will go by. Its not that hard to understand once you dive in. Probably start with conductor sizing and branch...
  21. With regard to balancing. AFAIK balancer speed...

    With regard to balancing. AFAIK balancer speed has nothing to do with getting even a reasonably high speed rotor balanced properly. Many balancers have their accelerometers calibrated and mapped up...
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    Get the chips out of the pocket ASAP. Recutting...

    Get the chips out of the pocket ASAP. Recutting chips will destroy an endmill in short order- that crunchy noise you hear is chips being recut. If you don't have lots of coolant pressure-...
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    One more if Century does not work out. Scandic...

    One more if Century does not work out. Scandic -The largest stamping and spring company in Northern California.
  24. 5052-H32 without a doubt. kinda gummy to...

    5052-H32 without a doubt. kinda gummy to machine, but not anything at all like 3003.
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    Me thinks Atlas gears were Zamac for a different...

    Me thinks Atlas gears were Zamac for a different reason- they were very cheap to manufacture.
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