A close up of the cutting blade on a box of aluminum foil.
I don't have a macro lens, I took a 50mm lens off of an old film camera (Minolta srt-101) and held it backwards in front of the lens of my digital camera. Very difficult to get it focused and hold it still, but it works.
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Saw. Also the blade does not look very sharp, so maybe the saw-dust is just an ignoble lure...
I'm watching it for a while now, but cannot begin to love it. I think it's he grooves in the metal which disturb the composition.
Macro is always tricky making sure the focus (DOF) is spot on. I find a remote release shutter is best as pressing the on body shutter button causes a lot of movement in a tight shot.