Mark, left, and Patrick Madden are the owners of M&M Sharpening Services, a knife- and blade-sharpening business they run out of their home.
Mark, left, and Patrick Madden are the owners of M&M Sharpening Services, a knife- and blade-sharpening business they run out of their home. Travis Heying The Wichita Eagle
Mark, left, and Patrick Madden are the owners of M&M Sharpening Services, a knife- and blade-sharpening business they run out of their home. Travis Heying The Wichita Eagle