Quote Originally Posted by Dave33 View Post
The CNC I have is a workbee with aluminium extrusion, it came as a kit form and I built it up.
It's not the most rigid of machines that's why I am cautious about getting such a heavy spindle.
In that case, I wouldn't go with the 2.2Kw without beefing up the Z-axis first, it just wouldn't handle the cutting forces well enough and end up breaking tools from vibrations or getting worse quality finishes.