This is a badge bit (BB) that is part of the 
PEP curriculum.  Completing this BB is part of getting the straw badge in 
tool care. 
 
 Sawmills are a much better way of making lumber than using a hand saw.  But they work better when their blade is sharp.  Let's sharpen a sawmill blade!
 
 Here's a guy sharpening a bandsaw blade:
             
                
            
 
 And another fellow sharpening a circular saw blade:
             
                
            
 
 To get certified for this BB, post photos or a two minute video of: 
 
   - close up of edge of dull blade
   - mid-process with all sharpening equipment used
   - close up of the sharpened blade