I have one of the KK box frame discs. Mine is 5 1/2 feet wide and has notched blades front and back. Weighs about 50 lbs per blade IIRC. I like it very much and it is well made with good welds. I bought it at a fair price.....and it will last me a long time.
On page 1, FWJ made excellent points about discs and operating in general. His information is great.
I generally use my disc to open new ground....after grinding out the stumps and getting the timber, brush and rocks picked up. My ground is sandy loam and the disc does a good job of turning new soil. I like the maneuverability of a 3 point disc for my small food plots carved out of the forest. I used to put a weight on the frame (big old log)....but now will make two passes instead and have the blades set up as FWJ describes. Usually by the second pass I am down to the hubs for depth. More than adequate.
I've broke a couple of blades on rocks or hitting a tree.....but this is extreme duty. After my land has been broken with the disc....and I have found all the buried "treasures"......I typically use a tiller and a drag to till for my food plots.
