i have a mac(macbook pro) osx and have started playing around with some cad for designing my projects. i dont have cnc, but it is nice to have a part designed and planned to make sure everything fits. so far i have found that P&PAD is the best (paper and pencil aided design). or AncientCAD (compass aided design) works good for lathe parts. i have tried freecad and google sketch up, because they are some of the only 3d cads that work on mac. freecad is almost unusable. there is no way to set diameters of circles, and there are no good geometry tools. alot of the tools are missing on the mac version or something, because i see utube videos of people who can actually make models with proper dimensions and that have more tools in the bar than i do. google sketchup is ok, but it is annoying if you try to delete something, and the structure of your whole model falls apart. and the line based circles can be annoying when things want to stick to the facets. i think if i could figure out how to get all of the tools in freecad, it would be ok. i am running .12 freecad because the newest version says "unstable"! freecad has potential to be pretty cool. anyone else have MAD? (macintosh apple depression) ? maybe i will just buy a REAL computer! then i can do all the things i want to, like cad, micro-controller programing ect... sent from hardware that wont correctly run software.