You could always pick up a six axis arm style robot for $8-10k fit a spindle to the payload and bolt it to the garage floor. Just remember to duck when it comes swing your way.

The old robots can't do this, their control boxes (servo motors and his drivers) have very little capacity for large files or g-code. new robots are very expensive, and the work area is reduced or need a very expensive platform with more than 6 axis.

You can put new drivers to an old robot for control this with a new control box but is the same, more than 10K in equipment.

The Mechmate chassis and design not is a good idea for a 5 axis machine, because use V wheels and vertical gravity forces, need a lot of modifications for maintain long Z axis in lateral forces.

I'm testing now linuxcnc with 5 axis and steppers, seem the latest versions can do 9 axis.

Attachment 15130

For these about software,

This is an interesting project:

https://www.kickstarter.com/projects...is-multi-fabri