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  1. When I did my 3 phase installation switching over...

    When I did my 3 phase installation switching over from a 5 hp home-built to a commercial 30 Hp I was going to go with a 25 Hp but the supplier suggested a 30. He was willing to supply a 25 but if it...
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    Just to be picky or pedantic: with X, Y and Z the...

    Just to be picky or pedantic: with X, Y and Z the normal axes for a vertical mill then the rotary associated with the X is A, in like manner Y & B and Z & C. W is movement of the table either closer...
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    Unfortunately, the title is off by ~10 times but...

    Unfortunately, the title is off by ~10 times but then orders of magnitude only count is paychecks. :-)
    It is not that none of us make mistakes but a spell checker and proofreading are both handy.
    ...
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    4140 normalized. Rc 30 not gummy. If that is not...

    4140 normalized. Rc 30 not gummy. If that is not hard enough then heat-treat.
    8620 somewhat gummy but case about 40 deep and quench in oil and they should last forever. ;-)
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    Being a lazy old grump I'd try the easy way...

    Being a lazy old grump I'd try the easy way first. Assuming you have a CAD/CAM that does a good job of importing .dxf. Import the file(s) then export with a Haas post. 2D should be a cinch.
    Note:...
  6. Thread: MDA Precision

    by ss_user
    Replies
    18
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    1,793

    My first impression is a " Sherline on steroids"....

    My first impression is a " Sherline on steroids". Orders of magnitude difference between that and a Haas but then orders of magnitude only count in paychecks. ;-) How much of the claimed spindle...
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    Optical encoders are usually bandwidth limited by...

    Optical encoders are usually bandwidth limited by the speed of the opto sensor. FO is nice stuff. Expensive electronics on both ends of the cable but error rates are one in E-12. Even the multi-mode...
  8. XOn and XOff is the flow control to keep the...

    XOn and XOff is the flow control to keep the buffer from overflowing but since you have it working you probably don;t care. :-)
    Good job anyway. DB9's are SO much fun to solder. :-)
  9. Fadal G Code M Code Quick Reference pdf - CNC...

    Fadal G Code M Code Quick Reference pdf - CNC Manual
    sometimes google is actually useful. ;-)
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    Good Grief Charlie Brown. You work with machines...

    Good Grief Charlie Brown. You work with machines everyday that can kill or maim you. Just a bit of inattention. There is a good reason pinch points on machines are labeled. I have a friend that...
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    That 'wonderful' smell is most likely from...

    That 'wonderful' smell is most likely from volatile fatty acids. The peroxide made the coolant oxidizing and anaerobic bacteria can't survive.
    3% H2O2 is rather innocuous however 30% is nasty stuff....
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    Ethernet to machines is indeed nice. I run about...

    Ethernet to machines is indeed nice. I run about 100' of cat5 from my desktop (CAD-CAM) to my machines. Two hops: the switch near the desktop and a small switch in the shop.
    For a direct connection...
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    Well if you want pretty google Steve Earle ...

    Well if you want pretty google Steve Earle
    Fraser Action
    Lots of care and hand polish ....$$$$

    I might have it all wrong but the part seems to be made for a C axis or for a lathe.
    Just my...
  14. Thread: Clod Computing

    by ss_user
    Replies
    15
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    4,795

    My opinion: cloud is great for backup and...

    My opinion: cloud is great for backup and somewhat more reliable than the usual local system. How ever being paranoid ... I'm not, I'm not, I'm not. :-) My feeling is that the cloud should be used...
  15. Thread: Thread Chatter

    by ss_user
    Replies
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    3,767

    Tape shim is a good idea but I'd go with a strip...

    Tape shim is a good idea but I'd go with a strip of soda can as a shim. Especially with jaws that leave marks on the work.

    Resonance is a bitch; ever try pushing a person on a swing not pushing...
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    Not really on your list but I used a home-built 5...

    Not really on your list but I used a home-built 5 hp rotary phase converter for several years but finally bit the bullet and got a 30 Hp commercial rotary. The lights blink when I start the converter...
  17. Nothing is impossible to the person that doesn't...

    Nothing is impossible to the person that doesn't have to make it work. :-)

    I've heard of shops normalizing 4xxx steels before machining.
    Laser cut does not sound like a good idea, 4340 is...
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    I've often thought about just what you did but...

    I've often thought about just what you did but never got around to it. The voltage drop across a silicon diode junction is approx .7 V but the drop across a diode in a circuit tends to be more like...
  19. Thread: ASTM A36 Steel

    by ss_user
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    67,659

    In a broad sense A36 chem spec is about .1%...

    In a broad sense A36 chem spec is about .1% higher in C and .3% higher in Mn than 1018. The range of permissible analysis is rather large for both steels. As for the chemistry of Chinese A36, etc...
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    The really good cnc hobbyist runs linuxcnc;...

    The really good cnc hobbyist runs linuxcnc; somewhat more geekie. Which is why is is not predominate in the commercial world. There are a few commercial shops running linuxcnc plus a well known CAD...
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    Mineral colors are available for tinting...

    Mineral colors are available for tinting concrete. It gets troweled into the top surface of the pour. I suspect the example I saw was plain iron oxide; color similar to the classic barn paint.
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    For tall grass a roughing cut with a hedge...

    For tall grass a roughing cut with a hedge trimmer attached to the front of the mower makes serious doc a trivial issue. Rough full width and then do the finish pass with minimum overlap.
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    My approach may be really dumb but when one gets...

    My approach may be really dumb but when one gets desperate... rough the slots with edm then clean up with slitting saw. Not very efficient but you've put a lot of time and money into this. I hope...
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    To the OP and really all of us. Please proofread...

    To the OP and really all of us. Please proofread your post. Being an old curmudgeon the first thing I did was check the driil size.
    27/64 is ALREADY ~.7mm oversize. Even 25/64 would have been...
  25. About us - Bernardo...

    About us - Bernardo
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