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Thinning webs (drills)

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  • Thinning webs (drills)

    I've got a few drills that could stand to have the webs thinned. far back should they be thinned? Since I don't have a thin wheel for bench grinder, I planned to just use one of those little 3" abrasive disks in a air cutoff tool. Anything wrong w/that approach?
    (I've never done this before. ..obviously)
    Lynn (Huntsville, AL)

  • #2
    I use the corner of thee wheel. Use the corner of a slip stone on drills under 1/4".

    You'll mess up a few practicing but you'll catch on to it.


    • #3

      Do you have a problem with it rounding off the corner of the wheel? It certainly depends how many drills you are doing.



      • #4
        Dress the wheel first so theres a nice crisp corner and use a light touch. Your holding the drill so it points almost straight up. With a little care you shouldn't touch the opposite face at all.


        • #5
          If you are going to do several,then dress the wheel at an angle so it is larger toward the outsie of the grinder.Kind of looks like a cup type wheel.Works great.Grinding wheels are a consumable so dont be afraid to use it. Jim


          • #6
            Thats why it is good to keep one wheel on your grinder just for grinding drills, toolsteel etc - so the wheel corner stays sharp - just what you need for web thinning, chip breakers etc. (and take the other wheel off and fit a linisher so you never use your grinding wheel again for all those other grinding jobs).