Low pressure garden bed irrigation

2026/07/01 : New version (see files with "V2"). Improved design for better removal of support structures. The new spinner-design need some care for print orientation and support, please checkout the 3mf file for best results.

I recommend random seam position at contact surface of spinning parts.

As the title says this is for Micro-dip-Systems and not for the usual water pressure. Its specially designed to work with low water flow sources.

The pipe connecotrs fit the common micro drip systems with 4.6mm or 3/16'' pipes (such as Gardena). The slow water application ensures that the plants and soil can suck up the water and no water is wasted.

The first print profile includes a sprinkler that with the 1.5 bar covers a diameter of about 1m / 3ft.

In
my system I can only feed three or four of the sprinklers with one
4.6mm line. I use 13mm hose for bigger distances and split off 4.6mm for
about 3 sprinklers. To do so you can find sprinkler base with one or
two connecors as well as my cross connector to reduce from 13mm to
4.6mm, which prints fast and with barely any print support.
https://makerworld.com/en/models/1475323-micro-drip-x-split-reduction

How to assembe the sprinklers assebled with printed threads, glue only needed if you want to secure the top permanently.
 

• remove support material

• Place the pipe between base and top part. Screw top part on but not too tight, the pipe need to spinn free

• screw on the spike to the base.

I designed this inentionally as modular parts so that I can provide other spike designs if you don't have such lose soil as I have in my beds. I also can provide those spinning pipes in other shapes if you need them to spin faster/slower or more/less upward for different spray radius, let me know if you have issues.

I really would like to see, how those sprinkler work in your setup. Please share some pictures form your prints, that would boost my motivation to share more models.

I recommend using white PETG as this should handle direct sun beter than dark colors or PLA, but let me know if PLA worked for you :-)

print support required! I highly recommend using variable layer height, as this helps with the bridges inside of the pipes.

Also checkout my related models that help to connect the hose and the rain water filter for IBC containers.