|  | Click 
            here to go to  Reference 
            Library & Industry Guidelines  |  | 
         
          |  | Head's Up Cutter Heads   Cutting 
              Chart      
              Finish 
              and Rates of Speed 
           |  | 
         
          |  |  | 
         
          |  |  KNIFE 
              MARKS PER INCH 
 For the following species, keep knife marks per inch within the 
              following parameters.
 
 |  |  | 
         
          |  |  | 
         
          |  | 
               
                | Kind 
                    of Wood 
                 | Knife 
                    Marks per inch 
                 |   
                | Ash 
                 | 11-14 
                 |   
                | Basswood 
                 | 8-12 
                 |   
                | Beech 
                 | 12-14 
                 |   
                | Birch 
                 | 12-16 
                 |   
                | Cedar 
                 | 8-12 
                 |   
                | Cherry 
                 | 12-14 
                 |   
                | Cottonwood 
                 | 8-12 
                 |   
                | Cypress 
                 | 8-12 
                 |   
                | Elm 
                    (soft) 
                 | 8-12 
                 |   
                | Fir 
                 | 8-12 
                 |   
                | Gum 
                 | 9-14 
                 |   
                | Hemlock 
                 | 8-12 
                 |   
                | Hickory 
                 | 12-16 
                 |   
                | Mahogany 
                 | 12-16 
                 |   
                | Maple 
                 | 12-14 
                 |   
                | Oak 
                 | 12-14 
                 |   
                | Pine 
                 | 8-14 
                 |   
                | Poplar 
                 | 8-14 
                 |   
                | Redwood 
                 | 8-12 
                 |   
                | Spruce 
                 | 8-12 
                 |   
                | Sycamore 
                 | 10-14 
                 |   
                | Walnut 
                 | 12-14 
                 |  |  |  | 
         
          |  | To reach 
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 (Eastern Standard Time)
 
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 |  |