Finished compost can look wonderfully dark and crumbly right up until a half-rotted twig, avocado pit, or mystery chunk of bark lands in the middle of it. Screening finished compost removes those stubborn bits and gives the material a more consistent texture, and the good news is that a fancy commercial sifter does not need to enter the picture.
A few inexpensive materials can turn a pile of homemade compost into something that looks far more polished. The trick involves choosing a screen with openings that match the job, building a setup that does not fight back, and remembering that the goal involves sorting compost, not creating artisanal dust.