Great idea for a low tech device however, his might have had more impact if it was a whole shot of the flour shifter. If anything this shot needs to be a lot larger. Very tiny photo.
Man, but this is a small photo. That has the advantage at least of allowing the strong general lines of the composition to show through - and those lines are strong indeed; but what's missing is the details. A photo should work on both levels, ideally - that sense of a grand design, and of the fascination and interest of details, and your submitted size orevents that I'm afraid.
Entry is somewhat small in size. Try resizing your submissions to 600-640 px on the long edge. Otherwise the focus is good and there is a lot of detail.
i like that you took a picture of just a part of this sifter (?). i think it is much more interesting , and a better composition, than if you had shown the entire sifter.
Too close of a crop and too small of a resize to see the photo. The image is just dull due to the massiveness of the big dark grey object. A nice color photo of it in action might have been better.
too small. One of the last things to do before saving the pic is to resize it. Ignore DPI, just go with total pixels - make the long side 640 or there abouts. When you save it, shoot for 147k or less - depends on your software how you achive that, but adjusting compression level is how it is generally done.