Whats the maximum size that the OX CNC can be built to and still maintain reliability and quality? We would like a 4' x 4' work area. If the ox cant be reliable at 4x4', then could you recommend a design that can? Thanks so much.
The Ox is a hobbyist grade machine, nothing more. The way you are asking it sounds like you are looking for a production machine in which case you need to be looking at what the big boys have to offer. cncrouterparts and laguna have some nice offerings. Expect to drop some major bills though.