Router Build number 2

[charlieuk]

so I went back to the start and stated fresh as I had made a few mistakes on the size

im still thinking of in cooperating a 4th axis to also machine aluminum.

im assuming running it down the length of the x to one side is the best option as it will be stiffer with the spindle not traveling across the gantry.

What I cant decide is is it better to have it inside the main frame or mounted outside given the main machine is going to be fairly heavy duty and was going to have raised rails. What I don't want is it to take loads of time to set the 4th up so I never end up using it but at the same time it would be good to keep the machine as compact as possible.

any one got any advise?