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  1. Replies
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    Most indicators have some hysteresis, which will...

    Most indicators have some hysteresis, which will appear to be backlash.
  2. Sell it whole; I hear there's a guy who wants to...

    Sell it whole; I hear there's a guy who wants to build a machine from scratch. I don't think he has much money though...
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    One trick to eek out a little more accuracy would...

    One trick to eek out a little more accuracy would be to alternate climb and conventional passes; that'll cover up axis reversal marks a bit.
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    Good ones anyway. I have a couple cheapies I use...

    Good ones anyway. I have a couple cheapies I use once in a while.
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    No contest indeed. I sometimes get a print and...

    No contest indeed. I sometimes get a print and model at 5pm, and put the part on the engineer's desk by morning. I can throw an endmill in and get it done; I don't have a full set of boring bars...
  6. Thought you said you didn't value money. Why...

    Thought you said you didn't value money. Why aren't you giving them away for free as in beer?
  7. I've been a machinist for 30 years because it's...

    I've been a machinist for 30 years because it's what I love doing, and it pays very well at my level. I make more than most of the engineers at my company.



    No, you came here to argue and...
  8. You know you can mill a mirror finish on a 50...

    You know you can mill a mirror finish on a 50 year old $500 clapped out Bridgeport, right? No, you don't know. You don't even know enough to know what you don't know. I've been machining 30+ years...
  9. Hi, I've never worked in aerospace or flown an...

    Hi, I've never worked in aerospace or flown an aircraft (except flight sim!), but I'm going to build a single stage to orbit space plane in my garage from some scrap 8020 rail and a leaf blower. ...
  10. Replies
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    It's not just data collection; they adjust the...

    It's not just data collection; they adjust the backlash compensation and the error mapping to minimize the error in the machine.
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    That's about six bone plates.

    That's about six bone plates.
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    About $1800 for a VF-3SS with a trunnion. It...

    About $1800 for a VF-3SS with a trunnion. It would be about $550 less without the trunnion. I use PQI here in MN.
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    The ratio of cutter size to hole size plays a...

    The ratio of cutter size to hole size plays a part as well. Skim a 1" hole with a 1/8" endmill, and you'll see every imperfection of the machine's movement show up on the hole wall. Cut a 1/2" hole...
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    "Threading the needle is a task for the young." ...

    "Threading the needle is a task for the young." I have a five year old machine that's only ever been used by me, for prototypes and short runs, and that gets a laser and ballbar calibration every...
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    On warping, you can control the warping...

    On warping, you can control the warping direction. The ends/edges of the part will bow towards where you remove the most material; the surface is in compression. I just did some acetal lids, and I...
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    Different plastics cut and warp differently, so a...

    Different plastics cut and warp differently, so a test part in another material won't help you much. First, see if you can use generic acetal copolymer; it's cheaper, doesn't warp as much, and...
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    If the entirety of the hole falls between the min...

    If the entirety of the hole falls between the min and max, you're in.
  18. Yes. There was a company advertising a service...

    Yes. There was a company advertising a service to do just that several years ago. Very expensive, had to be done for every tool / workpiece combination, and since the workpiece changes as you cut...
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    Use the money as a down payment on a new machine...

    Use the money as a down payment on a new machine with the options you want. What are your parts like? That'll make a big difference.
  20. That's the thing. If you want to build a...

    That's the thing. If you want to build a machine, go ahead and build a machine. If you want to USE a machine, just buy one, 'cause it'll be a very long time and more money than buying one to make...
  21. If you don't value money then why not plop down a...

    If you don't value money then why not plop down a few hundred thousand for a machine built right?

    I've found that people who say they don't value money say that because don't have any, and it...
  22. 5 microns is darned near 2 tenths, which is what...

    5 microns is darned near 2 tenths, which is what you can reliably expect from a Haas. Don't forget to stack up all your tolerances and deflections over the entire machine, including thermal growth. ...
  23. Put birds in an airtight box on a scale. It was...

    Put birds in an airtight box on a scale. It was the same when the birds are in flight.



    Sounds like you need to start generating your own power.
  24. Please do report back with your success in...

    Please do report back with your success in building a 5 axis machine that holds millionths on a shoe string budget. I'm sure it will be enlightening for us all, not to mention overturning the entire...
  25. How long would it take you to rewrite a Linux...

    How long would it take you to rewrite a Linux equivalent from scratch?
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