Here are some pictures of my latest CNC build. I've been meaning to put them up for awhile now, but haven't had the time until now.
I dissembled my old CNC so that I could use the parts from it to build the new one. My old CNC wasn't terrible accurate, so the goal with this build is to make a CNC which is as precise as possible which also doesn't cost a fortune. In fact, I have managed to get this far using scrap material that I had on hand, so, thus far, it hasn't cost anything.
I stole part of Travis's CNC design (Here is the link http://cerebralmeltdown.com/forum/index.php?topic=33.0
). Like his CNC, the one I'm building has a fixed y-axis, which means that the x-axis table moves underneath of the y-axis instead of the y-axis moving over top of the x-axis. This should make the CNC more rigid. The downside though is that it takes up about twice as much space. Of course, I can build shelves over top of half of it to reclaim that space, so I guess the downside kind of evens itself out.
What also worked out rather nicely is that I have actually increased my cutting area while still using the same leadscrews from my old CNC. The old one had a cutting area of 2'x4' and the new one should have a cutting area of around 2.5' x 5'. Not a bad deal.
Here is a few pictures of the linear slides that I made. They are a different from the type that people usually make out of angled metal. These can be adjusted for a tight fit. Sometime I want to make them out of metal instead of wood to make everything more ridgid. I don't have a drill press though, so I'll have to stick to wood for now.
These pics are from the y-axis slide.
This pic is from the z-axis slide.
Here is a picture of the y and z-axis.
Here is another of it almost finished. It looks kind of rough, but it should get the job done. There isn't a whole lot left to do, but I haven't had much time to work on it lately. So far, it has come together fairly quickly so, hopefully, it will be finished fairly soon.