I've done one CNC build using the raspberry Pi protoneer cnc hat that controls a small Proxxon Mf70 mill. I use Fusion 360 to do the cad drawings and then their cam module to generate the Gcode. I'm about to convert a little machine shop 3990 to CNC, also using a raspberry pi to control it. Since bCNC and UGS run on that platform I'll stick with either of them. My question is how can I use this setup to do simple operations like squaring up stock or a facing operation without going to all the steps to generate gcode using fusion 360? My shop space and budget are small so dedicating a mill to manual operation is a non starter. Thanks for sharing how you've solved this problem.