11.   Hundreds of thousands of patients each year have procedures to open clogged arteries by scraping them clean with a sharp blade or squashing plaque with tiny balloons.

12.   In a recent column about woodcarving, I confessed to a fear of accidentally maiming myself with a sharp blade.

13.   In her own comic routines, Joyce wields a sharp post-feminist blade.

14.   It gets dangerous opening a DVD, requiring a sharp blade and a steady hand.

15.   Keep blades sharp, linkages lubricated and machines clean.

16.   Like any product that does cutting, always keep hands and fingers away from the sharp blades and refrain from engaging in ice snowball fights.

17.   Obviously, you have to be very careful as you draw that sharp blade toward you.

18.   Red and green tractors slice fallow ground with sharp blades, turning up a promise repeated every year.

19.   Scissor shears have two sharp blades that bypass each other to make clean close cuts through the branch.

20.   Shears with an anvil configuration have one sharp blade.