My baby 15" x 15" machine

[wilfy]

electronics wise.. is this everything i am likely to need for my machine??
Upgraded Smooth CNC Standard 3 Axis TB6560 Driver +Box & 3Nm Nema 23 Motor & PSU | eBay

would it work out cheaper if i split them down and got the drivers from the place you recommended.. i'm not sue what size drivers to get and what size psu where as the above package seems to have it all included..

[Jonathan]

Nooooo... those are terrible drivers and bad motors!
The TB6560 driver only reliably accepts up to about 24V and you want to drive the motors from a much higher voltage to get the best performance. Ideally around 75V, so three times as much. For example:

Best Selling! Wantai Stepper Motor Driver DQ860MA 80V 7.8A 256Micro CNC Router Mill Cut Laser Engraving Grind Foam-in Motor Driver from Industry & Business on Aliexpress.com

(But shop around, that may not be the cheapest.)

The motors in the listing you linked to have a significantly higher inductance than the CNC4You motors. This will limit the torque you get at higher speeds since a high inductance means the current takes longer to reach the rated value, so at high speeds the current doesn't reach the rated value and hence you get less torque. That is also the reason for using a higher voltage - the current rises faster when a higher voltage is applied.

Edit: Just remembered, I posted a much better explanation here.