I'm interested in Step 2. How do you plan on generating the G-code from a shape (in any of the various formats)?<p>I'm lazy and mostly a software guy, so I have been looking enviously at these: <a href="http://www.ebay.com/itm/3040-CNC-ROUTER-ENGRAVER-4-AXIS-MILLING-HARD-WOOD-PCBS-ROUTING-HIGH-ADMIRATION-/290594271841?pt=LH_DefaultDomain_0&hash=item43a8c4b261" rel="nofollow">http://www.ebay.com/itm/3040-CNC-ROUTER-ENGRAVER-4-AXIS-MILL...</a>
Would really recommend using Tinkercad for the models. It's quite nice, and really easy to do actual dimensioned models(i.e. this bit is 3mm wide type stuff). I use it all the time for my 3d printer
I would love to hear more details, specifically the stepping motor setup, the Milling machine (Sieg X2) and various mods needed, did you add DRO's, etc.?
So far looks like grbl flashed to Arduino.<p>What is the budget for your machine? I'm also very interested in CNC and interested to see further progress and part 2.