Hey Ron, All I did was extend the slot in the base 1 inch. Also removed the collar from the Y axis handwheel shaft that had the inch readout on it. The table saddle would hit it. So now the saddle will come forward until it finally hits the handwheel at 11 inches from the column. It still has plenty of engagement of the y axis slide and dovetails on the base also. Have been looking at
http://www.camtronics-cnc.com The biggest servos he sells 1100 oz in peak. Unless I get a killer deal on something on good old ebay. Several things affect the rapids: The servo rpm, gearing on the pulleys to the ballscrews, pitch on the ballscrews and then the encoder pulse per revolution if too high can cause a bottle neck with transfer of pulse information back and forth between mach3 and the servodrive unit and the encoder. Mach3 has a limit of something like 45 khz pulse rate per axis but that can be multiplied by some components like certain servodrive units or grex controllers. I have been picking up a little on that stuff lately, Another member steering me in the right direction. Where are you at? OK gotta go now. Dave