Gravity-fed watering parts

thingiverse

You can attach this to a wall or side of your cabinets to provide trickles of water to your plants using a garden-hose style timer. Screw the conical part directly into the garden hose timer, then use the mounting bracket to attach it to a vertical surface with #8 wood screws or bolts. You can invert any solid bottle that has tapered sides such as a 1-liter soda or thick-sided water bottle. The bottle must be sturdy enough to create siphon pressure inside so it doesn't empty unless the water level goes below its opening -- just like old-fashioned water coolers work. You'll need to figure out how to regulate the flow, distribute the water from the bottom of the timer, and all that are specific to your project. This was designed for my personal-size sprouter which is a separate project http://www.thingiverse.com/thing:2136092 but I posted it as a separate thing in case anyone else is trying to do gravity-fed timed watering on a small scale. You'll need the type of timer that lets you see through when it's turned on. These are round with a clear screw-on faceplate and can be found on ebay for about $15. Here's an alternative: https://www.amazon.com/dp/B000UJH6HQ. If the dove-tails are too tight, just sand down the wide dove-tail surfaces until you get it loose enough to go on and off without pounding on it. I learned this the hard way - hammering can introduce slow leaks into the parts if printed on low quality. I recommend sanding until the parts are easy to insert and remove, but not so much that they wiggle when assembled. I suggest printing the cone 100% in-fill to minimize the possibility of leaks. You'll use a lot less plastic on the simplified cone. The original cone has way too much infill and the wall thickness is all over the place.