I tested upon receipt, on a large outside gate. Course preparation time is very long (protect all that may be sprayed with paint, mount large rags or cardboard behind the gate as it is perforated, etc). For the machine itself: easy to use, not too heavy, a little noisy but you get used. It is perfect for large flat surfaces, vertical and non perforated, they are painted very quickly with perfect results. By cons when you want to paint horizontal parts, or small bars where things get complicated: painting no longer happens if we lean too the gun, and the bars, 3/4 of the paint passes through d where a beautiful over-consumption and ultimately a waste. I had a special mask spray painting (essential), but I had forgotten the result goggles full of small dots of paint on my beautiful sunglasses! I admit that I spent the second coat with a brush ... no way around it to properly paint the bars on their entire surface. So in the end: very easy to use, full and flawless results on vertical surfaces, very fast. Provide the necessary materials and a lot of time to protect the whole environment, even outside, and a little more time than a brush to clean the device. Goggles, special mask painting and suitable clothing as necessary ... Oh do not use outside when there is wind (even mild).