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    [edit: added pics 2 and 3, x axis in yellow! that might be clearer and make more sense!!]

    Apologies for poor quality drawings!!!

    Thanks Jazz!

    Yes, the image probably doesn't make too much sense as it is, LOL, this might be clearer, although not necessarily better! :-)

    In answer to your points;
    Why? I'm thinking that the closer to the spindle that the supported rails of the Z are, the less leverage that can be applied to them, so the spindle mount is also the supported rail bearing mount.... This of course assumes that fitting the rails to the spindle is a good idea! lol


    The way you have it drawn you are still relaying on just 2 rails/bearings and if the bit with rail on top thats jutting out from the Y axis with rails top n bot is not directly mounted to the gantry sides or X axis bearings plate then your in big trouble.!
    yep, ammended pic above

    central Z axis (Ala Mech mate)
    Not familiar with that design, will go find it.

    ...can be very strong it just cost's MORE, more expense, more real estate, more work.! .
    . .

    Yep, the real estate is going to be my main issue on an 800 x 800 table,


    trick is working out if it's worth that much MORE.


    LOL, and therein lies the answer! I'm guessing that if it was worth it, evolution would have saved it and it would have been done by now!

    Interesting exercise in getting my head around some of the things that I've only read about so far.
    Last edited by mocha; 03-10-2011 at 07:30 PM.

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