Spiral Concentrator

A Spiral (helical sluice) for gravity concentration of sand slurries


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I used to design these for a living, now semi-retired thought I would share one of my own designs to those interested. This one is 320mm diameter, can be printed at half scale a lot quicker and will still work. You can make it as many turns as you want but I suggest at least 3 turns.

Materials and methods

The one in the pic, I made full size. It has 5 turns so that's 14 "trough" parts, one feed, one pbox and lid and 15clips. I've also got a feed distributor and piping to suit if you are interested.
Send me a message if you want to make one, there's a few tricks involved.


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    Jilla Spiral
    7Z  β€“  3.7 mb
    Version 1 - Nov 06, 2019


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Mini img 20160429 075601Chookfoot published this design ago