stone sorter

[Alasdair Ryan]

I have got a good challange for you all how are interested i need a way of sorting stones into diferant piles here is a early atemped i did not like how i had to stop it when i had to emtey the big stone or add more stones to into it.

In reel life they work by vibration to sort out stones

look forward to the creation that people come up with it is not going to be easy there 3cm to dust stones to be sorted

http://www.bricklink.com/store.asp?p=alasdairryan

Edited April 27, 2010 by Alasdair Ryan

[kill will]

I have no idea what you're talking about, please improve your grammar and sentence structure. If English is not your first language, at least use some sort of translator before posting. And then there's some random grainy picture... And a link to a Bricklink store?

[DLuders]

I know what Alasdair wants to do -- he wants to create some rock sieve trays to sort gravel ranging in size from 3 cm (1.18") to dust. This is called "inch and a quarter - minus" size gravel. The sieve trays are stacked on top of each other, with the largest sieve size on top. The smaller-sized rock grains fall down through the sieve to get captured on the appropriately-sized grid.

The trick is to make a shaking tray that can vibrate a lot of weight to shake the gravel through the sieves. Recommend making grid sizes of 2-1/2 cm (roughly 1 inch), 1-1/2 cm (~0.6 inch), 1 cm (~0.4 inch), & 0.5 cm (~0.2 inch). Perhaps the oval-shaped #6575 Technic Cam (pictured below) could impart an up-and-down motion to a stack of sieve trays.

[Alasdair Ryan]

I have no idea what you're talking about, please improve your grammar and sentence structure. If English is not your first language, at least use some sort of translator before posting. And then there's some random grainy picture... And a link to a Bricklink store?

I am sorry you did not understand

dluders wrote

I know what Alasdair wants to do -- he wants to create some rock sieve trays to sort gravel ranging in size from 3 cm (1.18") to dust. This is called "inch and a quarter - minus" size gravel. The sieve trays are stacked on top of each other, with the largest sieve size on top. The smaller-sized rock grains fall down through the sieve to get captured on the appropriately-sized grid.

The trick is to make a shaking tray that can vibrate a lot of weight to shake the gravel through the sieves. Recommend making grid sizes of 2-1/2 cm (roughly 1 inch), 1-1/2 cm (~0.6 inch), 1 cm (~0.4 inch), & 0.5 cm (~0.2 inch). Perhaps the oval-shaped #6575 Technic Cam (pictured below) could impart an up-and-down motion to a stack of sieve trays.

thanks for the help i will look into your idea

Edited April 28, 2010 by Alasdair Ryan

[allanp]

I know what Alasdair wants to do -- he wants to create some rock sieve trays to sort gravel ranging in size from 3 cm (1.18") to dust. This is called "inch and a quarter - minus" size gravel. The sieve trays are stacked on top of each other, with the largest sieve size on top. The smaller-sized rock grains fall down through the sieve to get captured on the appropriately-sized grid.

The trick is to make a shaking tray that can vibrate a lot of weight to shake the gravel through the sieves. Recommend making grid sizes of 2-1/2 cm (roughly 1 inch), 1-1/2 cm (~0.6 inch), 1 cm (~0.4 inch), & 0.5 cm (~0.2 inch). Perhaps the oval-shaped #6575 Technic Cam (pictured below) could impart an up-and-down motion to a stack of sieve trays.

That cam would work well. This piece would also work well depending on the speed of vibration:

http://www.peeron.com/inv/parts/60483

You could use a short engine crank powered by a RC buggy motor to really vibrate the trays or a longer crank powered by a PF motor to shake them.

Vibrating the trays side to side would be best I think.