[CAUT] pinblock material, drilling speed, feed rate ?

[Dr. Henry Nicolaides]

Hi List,

I am curious as to what is being used due to a problem I
 recently have experienced.  I have a delignit block that has been 
around in my store room a couple of years.  When I started drilling as I
 had previously, the bit seized as I approached the bottom.  Ugh! I 
thought it may be cue to an older bit so I used a new one.  Thought it 
may be the heat so I hooked up my cold air system.  Thought it may be 
feed rate or speed or bit...but still seems to have a tendency to 
seize.  I'm using test material off the cut block to try an figure this 
out.  I did with success drill some test holes on a hard rock maple 
sample and also a Bolduc block.  The belts to the drill press are not 
slipping either.

Any suggestions?  Thoughts?

Henry Nicolaides
Piano Technician
Southern Illinois University
		

	
	    
	        
	            
	                
	                     
	                     
	                    
    	                    
	                    
	                
	            
	        
	    
	    
	        
	            
	                
	                    
	                    
	                    
	                        
	                            
	                                 
	                                
	                                
	                                    
	                                        
        	                                    
	                                        
	                                         
	                                        
        	                                    
	                                        
	                                         
	                                         
	                                         
	          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