The last time I drew a design on a PC was about 7 years ago... I'm a delegator supreme. Even CAD drawings are done with me sitting behind the CAD guy translating my drawings and basically me saying "Bendier there, straighter there" etc. I'm getting more involved with sort-of-consumer projects though and it would be nice for me to be able to directly generate initial concept drawings which can go to the 'shop' to be SLA'd or machined almost straight away. When I last looked (about 8 years ago) there wasn't really anything that I as an 'ideas guy' could readily pick up and quickly knock out designs. I'm also coming out with more things that I want to make for myself and it's a hassle (not to mention cost-inefficient) every time to go down to the CAD guys to hand them my drawings, do multiple corrections and then send it out to the machining shop. What would you guys advise for a guy like me who prefers to work in terms of rough drawings (on paper at that), but occasionally wants to get that in the form of a machinable / SLA-able form? I've got the Mac covered obviously, but I'll need the software and I guess optionally the tablet. I'm not looking to spend tens of thousands, but whatever's necessary to do it well I will consider.