How feasible would a vacuum hold-down system be for a vertical CNC like the greenLean?

Building a vacuum table, for any CNC machine is possible but doing it right might take a adequate amount of information and extensive planning. Depending on the overall complexity you want to build. Example, you want sections, and valves that can be operated to close sections of the table to allow vacuum to a specific spot of you material. It is possible and would be a very precise method to hold down your material. Additional Information: Thanks. It may be something I'd like to try on my greenLean at some point. Dan Spangler wrote a nice article on building a "Universal" CNC vacuum table in the latest issue of Make magazine, volume 41.