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Thread: Metal Gantry Mill

  1. #25
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    Quote Originally Posted by GITERDUN View Post
    There was a nice Sieg Super X 3 that sold on e-bay for around 1000.00- ball screws, cnc etc.
    Forget the treadmill motor- even if you ever got this thing built that thing would last about 24 hours.
    I'll mark my calendar to check back in 6 months and see how far you've gone.
    Getting down to the wire- any metal parts or just drawings?


  2. #26
    Registered The Blight's Avatar
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    Wow you sure know how to contribute with good information Giterdun! 28 posts of pure gold!


  3. #27
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    Quote Originally Posted by The Blight View Post
    Wow you sure know how to contribute with good information Giterdun! 28 posts of pure gold!
    Thanks Blight,
    One of my pet peeves in life is guys who talk talk talk about some idea or project but never GIT ER DONE. I'll wager that half of the posts on this forum and a lot of others are just guys verbalizing their pipe dreams.


  4. #28
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    I'm sure you are right, but so what? Let them do so. I see no harm in it, and I don't see any need to point such a thing out.

    I'm also sure that most of the posts here are made by people who do this as a hobby. Time is not an issue, and therefore projects will move on slowly. Some will never even make it off the drawing board, but it's still fun to watch what people have in mind. Good inspiration

    PS. Sorry for the harsh comment.


  • #29
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    Quote Originally Posted by The Blight View Post
    I'm sure you are right, but so what? Let them do so. I see no harm in it, and I don't see any need to point such a thing out.

    I'm also sure that most of the posts here are made by people who do this as a hobby. Time is not an issue, and therefore projects will move on slowly. Some will never even make it off the drawing board, but it's still fun to watch what people have in mind. Good inspiration

    PS. Sorry for the harsh comment.
    I love to read the posts by guys who are building machines- some of the work is absolutely amazing. I guess I just get irritated when I open a post titled " My New Mill " and find it consists of nothing more than a few hours work on a CAD program. Maybe there should be another section titled " MY IDEA FOR A MACHINE"


  • #30
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    Well you could send in a suggestion to the moderators. "Machine concept" perhaps? I could use it for some of my long term projects. I know the design of a machine will change as time goes by. You gain new knowledge and experience, and it affects the way you make your machine.

    As with most other hobbyists I have more time on my hands then money, and I don't have access to a big machine shop 24/7, but I do have access to my computer. I spend a lot of time drawing, and thinking up new projects. I guess it is the same with a lot of people on here. Some times you make a little progress, and eventually it will get done.

    I have also been spending some time on quite a few forums, and I know people would like to build all kinds of cool things, but most of the time it only gets to the drawing board, and some times they get to start the project before getting bored with it. I don't mind going through these topics, because if it was truly awesome I would start a similar project on my own


  • #31
    Registered Jesse B's Avatar
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    Design is looking good.

    Giterdun, if you're just gonna piss and moan, why don't you leave. Every forum on the internet is plagued with people like yourself.


  • #32
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    Quote Originally Posted by Jesse B View Post
    Design is looking good.

    Giterdun, if you're just gonna piss and moan, why don't you leave. Every forum on the internet is plagued with people like yourself.
    OK Jesse, I'm outa here- but I'll mark my calendar to check back on the 1st anniversary of this thread and wager there is no machine to see.


  • #33
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    Eagerly waiting for another pointless reply. One suggestion Giterdun. Just stay away from this topic. There is no need for you to make another reply here, and there is no one who cares about your whining.


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    I don't recall seeing his build log. I was thinking he just might be having a bad few days, but maybe a little more than that.

    If no log, then why not be supportive? You can type that way using the very same keyboard. You never stated why the treadmill motor would not work. Just that it wouldn't.
    If you are that knowledgeable about things cnc, then share it. Projects are just that. All of my machines where projects to start with. Without some great help from members on this forum, I would likely not have a cnc machine. It's incredible what a fella can do with a little constructive criticism and assistance from time to time.
    Lee


  • #35
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    Quote Originally Posted by LeeWay View Post
    I don't recall seeing his build log. I was thinking he just might be having a bad few days, but maybe a little more than that.

    If no log, then why not be supportive? You can type that way using the very same keyboard. You never stated why the treadmill motor would not work. Just that it wouldn't.
    If you are that knowledgeable about things cnc, then share it. Projects are just that. All of my machines where projects to start with. Without some great help from members on this forum, I would likely not have a cnc machine. It's incredible what a fella can do with a little constructive criticism and assistance from time to time.
    Giterdun and I have the same machine and have shared some info. He was brutally honest in his opinion of this build thread- right or wrong, as the old saying goes- " the proof is in the pudding" So only time will tell if he was right. Looks like he touched some raw nerves among the crowd, but maybe it will motivate Zach G to get cracking on this project just to prove him wrong.
    Regarding the treadmill motor, I have some experience ( which I shared with Giterdun). I did a DC drive conversion on my lathe/mill using the treadmill motors. Just looking at them makes you wonder if the horsepower rating etc is really accurate. They are very cheaply made with glued in magnets. If you get them in the right rpm range they are workable, but even using a good ( Minarik) controller, the low end torque is not up to par, so you still need to use some belt changes for the low end. Also, they have no cooling fan, so you need to put an external fan on them to keep the temp down- especially at low rpm. All in all, they just don't have the required capacity for a machine tool larger than a Sherline. Under extended use, even with the external fan I found the brushes arcing and smoking.
    I have taken the DC setup off my machine and will use it on a couple of little bench drill presses. I am now adding a 3 phase variable frequency drive system.
    My advice to Zach G is to get yourself the proper size motor for this project . Looking at that table, you are going to be in the 2-3 hp range once the machine is built.


  • #36
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    So it's okay to go around posting things like this in all topics which you don't believe will get done? Thats just stupid. What was the point of it? It doesn't help on anything as far as I can see! Please correct me if I'm wrong.

    We don't come here to post projects and have people say "I don't believe this will ever get done", and then have to prove them wrong. If that's the case, then I sure as hell wont post any more build threads!


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