This is a hurry-up build that I did 15 years ago when I needed a digger. It will go 17 feet down, will handle 24" bucket. I made a 12" bucket for tile repair work. The whole thing was scratch built with parts I picked out of scrap piles. This unit is pull-type, as I didn't have the time to make it self-propelled. It works well and will dig in hard ground/rocky stuff, and keep on digging. very strong for its size. Hope this gives an idea of what you can think up and build with old stuff.