3D Printable – Laminar Flow
My three-version 3D-printable garden hose laminar-flow nozzle project, moving from packed diffuser material to a stator-style core.
- 3d-printing
- fluid-dynamics
- laminar-flow
- garden-hose
- cad
- prototyping
- printables
- petg
- product-iteration
This is my three-version garden hose laminar-flow nozzle project. The idea was simple: take ordinary hose water and see how much smoother I could make the stream with a printable nozzle.
The versions show the progression pretty clearly. Mk1 proved the idea with packed diffuser material, Mk2 moved more of the flow conditioning into the print, and Mk3 uses a stator-style core with cleaner internal channels.
Laminar Flow Garden Hose Head (mk1)
First iteration, a bit leaky, the output from the nozzle is not as uniform as it could be. Might explore the idea of...
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Mk1: first working version
Mk1 showed that a 3D-printed hose attachment could smooth the stream enough to be worth continuing. It still depended on packed material like sponge or steel wool, which made it messier to assemble and repeat.
It did what a first prototype should do: work well enough to make the next version obvious.
Laminar Flow Garden Hose Head (mk2)
Revisiting a printable laminar flow nozzle concept that I published 5 years ago
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Mk2: more of the work in the print
Mk2 moved more of the flow conditioning into printed geometry. Internal fins and a perforated plate reduced the reliance on loose packing and made the model feel more repeatable.
Laminar Flow Garden Hose Head (mk3)
Things move fast when you're having fun -- no waiting 5 years between mk2 -> mk3.
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Mk3: cleaner internal channels
Mk3 is the version I am happiest with so far. It uses a stator-style core with separated channels and a smoother expansion path before the nozzle. The model notes recommend PETG for outdoor use.
The Printables links cover all three versions, so you can see the path from the rough first model to the current one.