I have been operating skid steers for 5yrs. I am a swimming pool contractor, and almost all of my digging has been on skids. I recently decided to get into some homebuilding. My question is what would you consider a job too big? With wheeled skids excavation always depended on traction/power, and bigger machines typically had more, but with ctl's you have tons of traction even w/ a small machine. I just bought my first ctl a Cat 247b,and I went with a smaller machine because it works better in confined places and it dug as good as some of the bigger machines and I know I would not have a problem digging a split-foyer design home foundation with it. Anyway sorry for the long post but I was just wondering How much is too much/what would you consider machine abuse, are these things made to dig constantly? Again sorry for the long post.