The Maslow CNC will take a full 8×4' sheet at up to 3/4“ thick. It requires a special training session before members can use it. Peter would be the best person to contact to learn to use it.
You can start with almost any file type, but typically we use an Inkscape SVG, run it through PartKam.com to produce the GCode. The mill itself uses Ground Control to run the GCode.
Recommended settings: feed rate 20 inches per minute