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            REAMING PROBLEMS: CAUSES AND SOLUTIONS
          
        
        
          
            Poor Surface Finish
          
        
        
          (a) Possible Cause
        
        
          Incorrect speed and/or feed.
        
        
          Solution
        
        
          Use the recommended speed/feed -
        
        
        
          (b) Possible Cause
        
        
          AWorn reamer
        
        
          Solution
        
        
          Do not allow the reamer to become too blunt.
        
        
        
          for re-sharpening details.
        
        
          (c) Possible Cause
        
        
          Insufficient or wrong type of lubricant.
        
        
          Apply and adequate supply of the correct lubricant to the
        
        
          cutting area.
        
        
        
           for the recommended lubricants.
        
        
          (d) Possible Cause
        
        
          Damaged cutting edges.
        
        
          Solution
        
        
          Use a reamer which is in good condition.
        
        
          
            Reamer Chattering
          
        
        
          (a) Possible Cause
        
        
          Lack of rigidity in set up.
        
        
          Solution
        
        
          Only use equipment which is in good condition and make sure
        
        
          the workpiece is securely held.
        
        
          (b) Possible Cause
        
        
          Feed too low.
        
        
          Solution
        
        
          Use the recommended speed/feed -
        
        
        
          
            Reamer showing rapid wear
          
        
        
          (a) Possible Cause
        
        
          Too little stock in the hole for reaming causing the reamer to
        
        
          rub and not cut.
        
        
          Solution
        
        
        
          for recommended stock removal.