Mid-span supports

Hi everyone, I want to build a MPCNC with a working area of 1.40 meters per 0.85 meters, I readed that I need some “Mid-span supports” is there any 3D model for that? Or can I buy something to do the job?

Thanks.

Use that as a search term in Thingiverse with MPCNC you should find a few options. That is a very large build, anything you do in an area that large will take a very long time.