way cool... have been planning on doing this for a while now, and hadn't yet found any DIY examples. Currently doing CNC cutting with a drag knife on our 4'x4' cnc router as proof of concept... but the real ticket will be integrating the multi-tool head on a 6' wide machine (just like you've done).
the next critical ideas I have (which I haven't seen here) is setting it up for laser cutting... I'm curios if a 1/8" sheet of Teflon glued over the MDF table surface will survive blade cutting and the heat from the laser? Has anyone tried this???
hoping to resolve the laser questions in the next couple months, I'm resolving CAD to G code integration currently, and hope to start building it in July