Rotating garden sprinkler

thingiverse

Here is my design for a rotary-dispersed water sprinkler designed specifically for medium water pressure. My biggest problem has always been that my garden is quite large, making ordinary sprayers insufficient for covering the entire area. Other designs often result in no-water zones, requiring manual movement to achieve total coverage. This design was created with the idea of placing it in the middle of the garden, turning it on, and effortlessly watering every plant without having to move it. I made mine using PLA, and utilized a servo retention screw like this: https://www.servocity.com/media/catalog/product/cache/1/image/438x280/602f0fa2c1f0d1ba5e241f914e856ff9/l/a/large_servo_mounting_screws.jpg You'll notice the spinner is flat on the bottom of each blade, designed to eliminate the need for supports during printing. The 45-degree angle ensures that most printers can print it with ease. The center hole in the spinning part might require drilling out; I used a .093" drill. Alternatively, you could heat up a screw and push it through or simply use a pre-drilled hole. Screw into the hole on the "base" to retain the spinner. My primary issue was the leaking end part, which I solved by applying thin CA (superglue) at the bottom and letting it dry. Polyurethane could also be used as an alternative sealant. This design is like my fifth version; initial versions lacked the retaining "edge" for a gasket inside where the hose goes. A gasket significantly improves performance, but it's not strictly necessary. I'm planning to make a sixth version with oblong discharge holes, which would help reduce fine streams that spread water unevenly through the spinner. Another possible remedy is designing the spinner so that there's always a blade in the way of the stream. The other issue is that small holes can become clogged if you have dirty water. Nevertheless, this design works decently well and has greatly reduced the time I spend moving the sprinkler around. It's not yet perfect, but if you're interested in an innovative sprinkler, give it a try.