DIY CNC Machine Power Requirements
Figuring out your current needs is simply a matter of adding everything up. If you have 5 2 amp motors, you'll need 5 x 2, or 10 amps just to drive the motors.
You should probably have at least 20% extra capacity, so I'd suggest having a 12V power supply that can put out at least 12A.
15A would be better.
The stiffer your power supply the less it will &quot;bobble&quot; as the load varies.