RE: 3D Printing Tank Treads, etc
I'd love to see more pictures of your JGRO CNC. I'm just starting this journey and reading/watching everything I can. My understanding is that the difference and issue between a CNC machine capable of machining aluminum versus a 3D printer will be the mass of the gantry and router. I'm wondering if there are plans for a combination unit where it is relatively simple to remove the complete router and attachment mechanisms and replace with a lightweight extruder and attachment systems and where your build envelope is 2'x2'x8" or more?
If not, I'll probably start designing one on CAD. Whether it will work or not, I've found that by 3D design, you really end up knowing every part and piece and how they attach (or don't!).
Thanks for your comments,
tjs