My CNC Project

Well, Bill and friends,
I have my Sherline CNC'ed 5400 Mill running now on CNC Pro and Dan's 2A board.
Mostly, I've been practicing g-code conversions from dxf files created in
Corel and AutoCad LT 98 and cutting acrylic logos (Ham callsigns for my buddies)
and pocketing. There are a lot of tricks to learn, but things are smoothing out
very well.
I mounted my steppers on the "wrong" end, saving the handwheels, only to find
that the handwheels located on the far end of the leadscrew are a terrific
resonating torsional and inertial load. They can be seen to vibrate in the
opposite direction to the actual rotation at the motor end at certain stepper
speeds. If they were located on a double ended shaft motor, the leadscrew
would not be twisted this way altho the wheels are still not doing things any
good. Like they say, handwheels are not needed anyway. Live and learn.
With the handwheels removed, the operation is MUCH smoother.
BTW, my motors (VEXTA 23's) have the bearings setup modified to provide
thrust preload.
Rich D.

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-==Rich=-=Colorado Midland Railway=-=<http://www.geocities.com/cmsteam/>