Related Clues:

• Make perfect
• Make sharper
• Put to the grindstone
• Give the edge to?
• Work on the edge
• Apply to a whetstone
• Make more acute
• Get sharp
• It might help you make the cut
• Improve, as an edge
• Sharpen, as skills
• Improve in small increments
• Make keener
• Make a point?
• Make a knife sharp