Talkback: How to make a soil sieve
You can also make the frame of 2x4's and staple the screening directly to one face. This becomes the -bottom- face when seiving ... allowing you to seive larger quantities, roughly a bushel, at a time.
I like the simple idea. I made something similar, but now quite so nice. However, I found it handy to put some low walls around the four sides of the sieve.