High-Frequency (HF) Milling Bit (Radio-Frequency (RF) Milling 
                    Bit)
                    
                     
                  
                  
                     
                      | Advantages | 
                       - Good high-frequency characteristics  | 
                     
                     
                      |  - Channel width does not 
                        change with milling depth  | 
                     
                     
                      | Disadvantage | 
                       - Thin cutters break easily  | 
                     
                   
                   
                   
                  
                  
                     
                       4mil ( 0.1mm) or less 
                        6mil ( 0.15mm)  | 
                       Since this size breaks easily, we recommend 
                        using it on boards with copper plating of 18µm or 
                        less in thickness and a spindle motor speed higher than 
                        50,000 rpm, and milling speed slower.  | 
                     
                     
                      |  8mil (0.2mm) | 
                      Wherever possible, use this size on boards 
                        with copper plating of 18 µm or less in thickness 
                        and at slower than normal milling speeds.  | 
                     
                     
                      | 12mil (0.3mm) | 
                      Wherever possible, use this size on boards 
                        with copper plating of 18 µm or less in thickness. 
                       | 
                     
                     
                      |  20mil ( 0.5mm)  | 
                      This size can be used under normal operating 
                        conditions. | 
                     
                   
                   
                   
                  Read more>> 
                  About the minimum width of milling 
                   
                  The relationship among the spindle rotating 
                  speed, processing speed, and the tools  | 
                 
                  50µm(2mil) line and space, 
                  the state of the art!   
                    
                  FP-21T Precision 
                   Stepping method and non-contacting pressure foot lead to 
                  the fine processing technology 
                   
                   
                   
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