So I was running a 3d carving last night. About an hour and a half into it, I hear a weird noise. I walked over to the machine and see that my 1/8" bn bit had broken and my z axis down as far as it could go, collet burning into my piece of mdf. I stopped the program immediately and try to assess the problem. My work piece was ruined, so i cancelled the remaining time. From there, I try to home the machine and the z axis made a weird noise as it went up. It then stopped moving and I could only get small movements out of it, while still sounding like it was binding or something, the weird part was that no matter if I pushed + or - on z, it would only go one direction( I think down) . I took the metal cover off to see if anything looked broke or out of norm. All I could see is that the z motor seemed to be binding or,maybe broke?? Anyone have any suggestions before I call tech support?