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  1. #11
    was wondering when you would chime in Jazz
    www.emvioeng.com
    Machine tools and 3D printing supplies. Expanding constantly.

  2. #12
    Quote Originally Posted by komatias View Post
    was wondering when you would chime in Jazz
    Well whats to say other than it's funny.? . . . Maybe not so funny if you'd bought it.

  3. #13
    I haven't laughed so much since Grandad unbolted wrong Chandlier. .
    your beginning to show your age now, I saw it first time round.
    ..Clive

  4. #14
    Is the F in FEA really an abbreviation of Finite, or does it mean something else here?
    Is this Mechanical Under-Engineering at it's finitest?
    I still think it's a great idea for learning on foam and possibly balsa, if it's significantly cheaper than other inadequately engineered desktop CNC machines it will be less loss when it's passed on cheap or scrapped in favour of something almost competent,

    - Nick

    ;-)

  5. #15
    lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.

  6. #16
    Sienci - In case it did not make it over there . . .
    https://www.youtube.com/watch?v=LFuYIi5-igc
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  7. #17
    Quote Originally Posted by dodgygeeza View Post
    lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.
    He's done Finite Element Analysis on a computer which tells him it's all good so you must be wrong and I must be wrong for agreeing with you.

  8. #18
    Quote Originally Posted by dodgygeeza View Post
    lol, when a 5mm bent screw causes the whole axis to wobble then there is something wrong with the design. Most 3d printers i have seen are more rigid than this.
    What you are seeing is a motor bolted rigidly to the end of a shaft and being allowed to wobble. Much easier than messing with universal joints or isolating it with toothed belts. I have been suggesting it for years so it must be clever

  9. #19
    Quote Originally Posted by JAZZCNC View Post
    Well whats to say other than it's funny.? . . . Maybe not so funny if you'd bought it.

    You're on quicksand there Jazz - I bought a MD machine (but I've learned a lot since !!!)
    Last edited by cropwell; 17-03-2016 at 01:09 PM.
    It takes all sorts to make a world, I am just glad I am not one of them.

  10. #20
    Quote Originally Posted by Robin Hewitt View Post
    What you are seeing is a motor bolted rigidly to the end of a shaft and being allowed to wobble. Much easier than messing with universal joints or isolating it with toothed belts. I have been suggesting it for years so it must be clever
    See what a formal engineering education and Finite Element Analysis can do for you?
    Sweet Felicity Arkwright it would seem!
    There but for the grace of god.............
    Last edited by magicniner; 17-03-2016 at 01:49 PM.

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