1.   As an assistant mixed plaster and threw it on the wall, Morris ran along the scaffolding, sliding the knife along the track until the plaster hardened.

2.   Carefully slide the knife through the fibers down the length of the leaf, leaving one side uncut, then fold open.

3.   Slide a knife around the edges of the polenta to loosen it, then invert it onto a buttered baking sheet.

4.   Slide the knife back toward the hinge and twist it to free the upper shell from the lower.

5.   Slide the knife carefully through the sushi roll to avoid tearing the nori.

6.   Start slicing, sliding your knife forward slightly as you work.

7.   There were other high-flown ways of sliding the knife into Powell.