Rotating garden sprinkler

This is my design for a rotary-dispersed water sprinkler, designed for medium water pressure. My biggest problem is that my garden is pretty large; to the point that an ordinary sprayer won't get all of it. Other sprayer designs end up with no-water zones, so I have to manually move it to get total coverage. This was designed with the idea that I could put it in the middle of the garden, turn it on, and get water to every plant in the garden without moving it. I did mine in PLA, and used 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. That's so that you don't have to run with any support; the blades don't start somewhere out in the air. It's a 45-degree angle, so most printers should be able to print it fine.

You will probably have to drill out the center hole in the spinning part; I use