Some Ovolo cutters can be used with radius cutters, to make rule joints.  
Specification:
D=31 mm|C=16 mm|R=10 mm|OL=44.6 mm|Shank Diameter=1/4 inch
    
    
    Specification:
D=31 mm|C=16 mm|R=10 mm|OL=44.6 mm|Shank Diameter=1/4 inch
        12 months
    
    
 
    
     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
             
             
             
            