Okay, I admit it, I LOVE a nice sifted compost. The absence of rocks, twigs, leaves etc. make the virgin soil look perfect. I’ve had people marvel at how beautiful my planting beds look after running my compost and dirt through a screen. Yea, yeah, I know it isn’t necessary to screen compost before adding it to your garden, but the payoff is (now) worth the work.
I’ve tried quite a few ways of sifting compost, but most of them require a lot of back breaking lifting and shaking. Well, following an idea I got here I modified the plans and made an incredible compost sifting device.
Here I am breaking my back. It doesn’t look like very much fun does it.
And here I am with my new sifting device. Boy is this MUCH easier than before! If I could just find a way to get past the shoveling of material into the screen and from the wheelbarrow I’d be home free.
Here’s the screen I’m using. My dad calls it “expanded metal lath”. It is pretty small, but it was what was available around the house. Lots of work, but great lookin’ dirt. Biggest problem (besides the time) is that the worms don’t pass through so well.
I think I’m going to go buy some strong 1/2 inch and 1 inch welded wire. 2 inch would be too big. I know because I have something that is about 1.5 inch and 99.9% of my compost goes right through it. Maybe that just means I have good finished compost?
The main changes I made to the design here was the change to the dimensions to fit perfectly lengthwise on my wheelbarrow and a lip that would keep it snug on the top of the wheelbarrow.
Future versions may include a feature that will provide for easy dumping of the left over compost / dirt into another wheelbarrow. I’m also going to make another screen with larger holes to filter compost that I’m not as worried about it looking perfect. I’m thinking about adding a system that will allow me to tip the top portion over the front of the wheelbarrow to easily dump out the non-screened material.
I’m also playing with the idea of “attachments” that will allow “hot swapping” of the screen size, but there may not be any reason to do that if one size fits all.
I’ll get some more plans / pictures posted once it stops raining.
Here is the second version. I used some pvc chicken netting. I was worried about it being strong enough, but it seems to be holding up pretty well.
I made this one quite a bit bigger than the other one. The good news is that it can sift a LOT of stuff. Bad news is that it is heavyer to haul around and dump.
In the backyard I went to our leaf pile where we’ve been dumping leaves for years. Under about a foot of leaves is some stuff that looks like it is completely composted. I took my new sifter out there and filled up the wheelbarrow in a few minutes. All the leaves, twigs, roots, etc. were out in a jiffy.
Am I loving my soil too much? See my post on my Garden Forum
UPDATE 6/1/08: I’ve been bested! Look at this Automatic Compost Sifter – Screen