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How to build a trommel (rotary screen) compost sifter

Posted by steve22802 7a VA (My Page) on
Mon, Jun 30, 08 at 13:19

Hi friends,

I've occasionally seen posts on this forum regarding compost sifters so I thought you all might enjoy seeing this Instructable I published on the web today which shows how I build a small trommel to sift compost and leaf mulch from my city leaf pile.

http://www.instructables.com/id/Trommel-Compost-Sifter/

Your comments and suggestions for improvement are welcome.

- Steve


Follow-Up Postings:

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RE: How to build a trommel (rotary screen) compost sifter

Cool! I always wanted to make one of those and your design is great - rugged and simple. I want to make one as wide as my pickup truck so I can shovel it right in at the mulch site and have the woody chunks (ours has a lot of limbs etc.) spill out onto the ground on the other side, leaving the yummy stuff in the truck.


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RE: How to build a trommel (rotary screen) compost sifter

>> I want to make one as wide as my pickup truck
>> so I can shovel it right in at the mulch site
>> and have the woody chunks (ours has a lot of
>> limbs etc.) spill out onto the ground on the
>> other side, leaving the yummy stuff in the truck.

That's a great plan! Probably if you would make the drum about twice as long (2 - 36inch pieces of hardware cloth) it would be about right for going across the width of your truck. Take a buddy along to keep the drum turning continuously and shovel away! :)

- Steve


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RE: How to build a trommel (rotary screen) compost sifter

My sifter is a wood square and a screen made of 1/4" mesh hardware and two large door handles to shake it.

The sifter with the motor is great! The simple one shows imagination. I would not have thought of using bicycle parts for structure and drivetrain.


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