Homebrew PCBs

In a message dated 7/26/2004 10:10:08 PM Central Standard Time, 
eemikez@... writes:
I don't see the Y-axis motor, maybe it's hidden behind the Z... <<
Mike:  No, I think the entire table-top moves on this, so the Y motor is 
"down in there" under the table.  A guess.

Does this EUR 1200,- price include the DRIVERS?  Expensive just for the metal 
parts in the view!  And NO "quill motor"?  Is one supposed to use one of 
those awful things with sleeve-bearings wit 0.005" play?  

Look in FILES; third one down.  That is home-brew, with Thomson linear 
bearings and Class-L way-shafting.  This can be built with Xylotex drives and 
Size-23/single-stack bipolar motors.  Here, as I made this in '84, I used (old) 
unipolar and home-brew drivers.  HOT (wasteful) "ballast resistors".  Never again! 
           Jan Rowland


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