OOPS! Need bigger steppers

Thanks for all the help guys. Tim, if I understand you correctly, you
are suggesting I power the boards and motors with 12VDC and use motors
in the 2-4 VDC/2 Amp range, correct? I was most concerned with
burning out the motors with the higher voltage, but this sounds like a
viable combination. I am going to use a 5/10-1 dual ratio timing belt
drive on each axis with half/full stepping so I can select
power/accuracy or speed depending on the application (engraving vs.
milling, etc.). I have several sources of motors in the 2-4 Volt/2
Amp range. I'll let you all know how it works out. Thanks again for
the help.