I have this thought...what if you build a CNC router that is configured more like a vertical panel saw instead of like a table. You know...angled at like 75 degrees and snugged up to the wall. A 4' x 8' sure would take up a lot less floor space. What kind of issues would you run into? Gravity is not necessarily your friend any longer. I don't see it having a huge affect on your x-axis. You may want to rotate or modify your bearing system a bit. I also don't see it having a huge affect on your z-axis. Your y-axis is now going up and down hill. That could be a big deal, but I'm not sure. You might even be able to come up with a way to counter weight it, or give it pre loaded springs like a garage door. Has anybody seen anyone build one like this before? Anyone know of a commercial maching that works like this?
Thanks,
Randy