Printed splitter.jpg
Device data
Manufacturing files
Hardware license CERN-OHL-S
Certifications Start OSHWA certification
Project data
Authors Stuart Larsen
Stuart Larsen
Completed 2014
Made? Yes
Replicated? No
Cost USD 8.99
OKH Manifest Open Know-How Manifest Download
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Water is one of the most important aspects of life all over the world, arguably the most important. So it is critical to have a robust infrastructure that can handle the demands of water, whether they be for survival, or agriculture or it's million of other uses.

So for this project I build a simple garden hose splitter.

  1. This OSAT is a garden hose splitter that can be used to split water streams from a common garden hose nozel.[1] This splitter can be customized to any desired size, and can be paired with multiples of itself to further increase splitage.

Bill of Materials[edit | edit source]

  1. PLA/ABS
  2. Garden hoses
  3. Water seal/ moldable plastic
    1. Source files and stl files can be found here:

Tools needed[edit | edit source]

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. Water seal material

Skills and Knowledge Necessary to Make the Splitter[edit | edit source]

  • No special skills necessary, just use of a 3D printer.

Technical Specifications and Assembly Instructions[edit | edit source]

  1. Download part off thingiverse.
  2. Modify .scad file to use your hose type (GHS or BSP)
    1. US: "garden hose thread", which is 3/4" straight thread and a pitch of 11.5 TPI (male part has an outer diameter of 1 1⁄16 inches (26.99 mm)) and is used for 1/2", 5/8", and 3/4" hoses
    2. Non-US: Outside the United States, the more common BSP standard is used, which is 3/4" and 14 TPI (male part OD is 26.441 mm or 1.04 in)
  3. Slice file using your favorite slicer.
  4. Print part
  5. Apply tape or adhesive material to threading to create good connection

It takes about two and a half hours to print if using 50% infill. Cura also said it'd take about 59 grams of plastic to complete. So if you say a kilogram of plastic is $25, the print cost about $1.45.

Water hose splitter.png

Common Problems and Solutions[edit | edit source]

Make sure you check what sort of hose you'll be using. If you're in the US it is most likely a GHS, outside of the us it is BSP.

Cost savings[edit | edit source]

The cheapest I found was 8.99. Although it also had valves. But chances are you can get around not having valves.

So cost saving is like 6.50 per unit. That's a 620% saving!

External links[edit | edit source]

References[edit | edit source]

  1. web page: Appropedia Garden Hose Nozel Main Page, Available:
Page data
Type Device, Project
Keywords 3d printing, gardening, gardening tools, hose splitter, osat, tool heads, plastic
SDG Sustainable Development Goals SDG08 Decent work and economic growth, SDG11 Sustainable cities and communities, SDG12 Responsible consumption and production
Authors Stuart Larsen, Kathy Nativi, Stuart Larsen
Published 2014
License CC-BY-SA-3.0
Affiliations MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab, MY4777
Language English (en)
Impact Number of views to this page and its redirects. Updated once a month. Views by admins and bots are not counted. Multiple views during the same session are counted as one. 57
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