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Grooved Mower Blades Last Longer, Cut Better
Put grooves in your shredder blades if you want them to last longer and to do a better job. It’s faster than grinding them down to sharpen them, and you won’t have to buy new blades as often.
  “There’s no reason to do it with a new blade,” says Doug Eberhart. “However, when it’s time to sharpen them, put grooves in instead. I cut grooves 1/4 in. deep every 3/4 in. on the cutting edge of the blade. I run them against the cutting direction of the blade. The serrations help the blades bite into the weeds a bit more.”
  Eberhart pastures cattle and cuts hay in pecan groves, using a batwing mower to keep the weeds down. Shredding the weeds instead of using weed killer lets vetch and clover grow. He has found that serrating the edges with grooves takes out hard-to-cut mature weeds like broomweed or ragweed.
  “With the grooves in the blade, it cuts them right off,” he says. “If you cut them off below the bottom leaf, it will kill them.”
  Eberhart especially likes how easy it is to cut grooves in the blades. He can do three sets of blades on his mower with batwings in less than 10 min. Grinding the blades down to sharpen them would take a lot longer and leave less steel for cutting.
  “As the blades wear down, I just serrate them every 100 acres or so,” says Eberhart. “That can be 10 times a year, as I’ll shred a thousand acres a year or more.”
  Contact: FARM SHOW Followup, Douglas Eberhart, 8683 County Rd. 156, Bluff Dale, Texas 76433.

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2013 - Volume #37, Issue #1