You're off your rocker
Take a close look at how the cabling should look like according to the manual....
I have a bad cold, so I will not dare to give you a cookbook here with my stuffed head and smoke coming out of my ears... But here is a list of things you have to check and set accordingly and you are on your way!
1. Check the winding of your stepper. Parallel Bipolar gives the best oompffff and look up that voltage for that type of wiring for both motors. There are two other ways to connect the winindgs and they are not as powerful. Check that!
2. Take the lowest Voltage of the motor e.g. 3.5Volt and multiply that by something between 15 and 20. Till you get a result you can actually buy.... Like 40-50 Volts.
Consider that higher Volts are fine but it also becomes much much unsafer to operate.... DC is worse then AC to touch and be really really careful with anything above 5-15Volts...
Really!
3. Take the highest AMPS like 4amps and multiply with the volts you need. e.g. 70Volts times 4amps is 280 watts. Thats what one motor can pull. I know... that is not correct as it is less because the gecko drive is pulling with 20KHz and bla bla bla but I don;t want to scare the good man.... Soooooooo something like 5-600 watts will heat that flock of motors well.
Considering not all axis are moving at the same time.
4. Switching power supplies are not good. Use a Toroid transformer. Antec.... New Jersey... My Chinese Neighbor... Good Stuff and very affordable. People will try to get into an argument about toroid's and switching power supplies. Tell them I'll meet them behind the gym and show them their split diode!
5. The Gecko's resister does limit the ampere NOT the voltage. You are a tad lost there.... aehhh of the rocker
.
6. The Spindle will use a VFD Device which will supply the 300 to 400 Hz to drive the RPM high. Do not let the Manufacturer talk you into some horrendous sum. Your size should not cost more than a couple hundred dollars. Check Dealers Electronic with their fabulous VFD's and great service. I have 4 from them, all quality manufacturers like Westinghouse and one fried after a year and a half and I got it exchanged for free and upgraded to the latest model...
So.... check your setup again and the best of luck. And for all.... keep it safe. This is not harmless stuff....
Just in case, give your wife my email address.... I can use that 5th axis head
Again.... best of luck and the best wishes for a un-toasted experience
Lemo