Quote Originally Posted by MikeInDevon View Post
....I've heard that Fusion360 is good but at the moment I'd prefer something that is free to download, then I can make all my mistakes without it costing an arm and a leg. I suspect for a MkII I would turn away from grbl and move to something quicker and move scaleable but for now grbl and UGS appear to do most of what I want......
Fusion 360 IS free to download and use. It would only start to cost you if you ran a commercial business off it, with turnover exceeding $100k or so. As Neale says, you can run it on Mac if you prefer but it include everything you could possibly need in one environment and has a very active and supportive user and developer base