I was pleasantly surprised by the quality and operation of this tool. The assembly was easy, even though the directions were scanty. I purchased a "used" model, but I suppose that the previous owner couldn't figure out how to put it together. It was truly "as new."I used this after a rainstorm which softened the organic material on the deck boards. I sprayed some water with a hose in the area I was brushing on the MAX setting. The material came off easily. It didn't get everything, due to the small size of the grooves in the "UltraDeck" boards (from Menards). But it did a wonderful job.I was pleased that the motor kept going strong. I imagined that it would overheat at some point due to the load on the motor and the duration of continuous use, but this didn't happen. The unit is robust and strong. Well made. I am not easily impressed, being an engineer who has evaluated many designs for durability over the past 40 years.Overall, a very good product. Knowing what I know now, I would but a new one at the full price.Good job SICENXTOOLS!