That worked just right for my driveway, I still have more to do on the driveway but you get the idea. The window cleaner for cutting coolant was told to me by an old pipe fitter I work with who does a lot of work with stainless and that big pipe you see in the pic. He told me to try it out when I was trying to drill out chainsaw bars for my saw mill. That works better than any thing I have ever used. I was able to do a full 3' long cut through 3/8" thick steel with one sawzall blade, I even made most of the cut across the circumference until the blade broke off at the shank with only an inch left to cut. It was a Milwaukee cuttin torch blade. I just used a regular steel drill bit to drill the holes and a cordless drill using the glass cleaner, you can actually pull the bit out of the cut and it will be cool to the touch using that glass cleaner.