8x4 Build based on plans by Joescnc Hybrid R&P

[JAZZCNC]

Wow, thanks :)... Can I ask just one more question? The nema 24s should be fine, although 60mm size the hole mounting is the same but they have 8 wires! Is that 4 more than usual! Or is 8 OK (they only have 8 wired ones in UK warehouse)

Ok let me explain the difference between 4, 6 & 8 wire motors. Steppers can be wired in several configurations with each making a difference to how they operate. There are 2 commonly used methods #1,#2 and one not so common #3.
#1 Bi-polar parallel (8 wire)
#2 Bi-polar Series (4 wire)
#3 Uni-polar (6 wire)

8 Wire motor is known as Hybrid Motor and can be wired in any of the 3 configurations. Each Config will affect the current used and how the motor performs. (8 & 6 give roughly same performance but unipolar require drives that allow it, hence why not often used on modern machines)

So if using 8 wire motor this would be wired Bi-polar parallel and requires roughly 2x the amps of Bi-polar series to give rated torque. However In performance terms it holds the Torque much higher up the RPM range than does a Series wired motor for the same given voltage.
But like all good things this comes at a cost. You have less torque lower down the RPM range.

What this means to YOU and US is that for Router where your cutting at higher feed rates and higher up the RPM range then Bi-polar parallel is best way to go.

If you was building say a Milling machine then you'd wire in Bi-polar Series because require more Torque lower down the RPM range. Still uses 8 wires just wired differently. Also requires less current than parallel so lower amp drives can be used. However for the same voltage the RPM will be lower because inductance is higher due to how it's wired.! . . . Again back to can't have something for nothing.

Now 4 Wire motors are Fixed by the manufacturer and you buy them either Bi-polar Series or Parallel wound. Often they are Series wound.
The difference being that Series wound will require roughly twice the voltage to reach the same RPM as Parallel wound motor.

Won't get into 6 wire unipolar because it's a throwback to old tech and drives so not really relevant here.

So for best performance with a router, you want 8 wire motors and wire them Bi-polar parallel.

If you look at the Datasheet on the Cnc4you it will show you how the wires are connected for each method. All 8 wires are used but joined in different ways.