Airlift
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An air powered underwater pump intended for dredging of silt or gravel.
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Model information
- Source
- Printables
- Category
- Other Gadgets
- License
- Creative Commons — Attribution — Share Alike
Do you need to excavate some silt or gravel? Or just make a big mess in the water? 3D printing to the rescue!
We needed some way to move relatively large amount of pebbles blocking a sump in a cave. This device fits standard 50mm grey waste pipes and there are printed threads for two different inflator nipples I had at hand. A 12L 200bar cylinder lasts a bit over 10 minutes and it is able to lift even pebbles. Basically whatever fits can be lifted. And of course it makes a premium mess in the water :-)
As always I use PETG, 0.2mm layers, no supports. You will need one M5x25 (or longer) bolt, nut and washer, preferably stainless. And of course a cylinder, regulator and an inflator hose.
Here is how we were testing the first prototype … and enjoying it very much :-)