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Author: jonathan.wallaceadams  
Date:   2017-11-01 03:24 
 On my Tradition, the lower joint has a mirror-like bore while the upper joint is rough like wood grain. My peer's R-13 doesn't have this discrepancy. I feel like it slows down my air. When I play in the left hand, the sound is airy and less resonant than the right. Could this be the issue? How could a tech fix this? 
 
Thanks, 
Jonathan 
 
Just an aspiring student. 
Buffet Tradition 
Mpc.: Hawkins "G", Barrel: Moba, Reeds: Reserve 3.5+ 
 
Post Edited (2017-11-01 03:35)
  
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Author: Dibbs  
Date:   2017-11-01 15:32 
 Since the air has to go through the upper joint before reaching the lower one, I doubt that this is causing the issue you describe.   
 
I'd try to forget about it, but now you've seen it you probably won't be able to. 
 
I don't know how to fix it.  Wax maybe.
  
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Author: Steven Ocone  
Date:   2017-11-01 16:33 
 There is very little air flow in wind instruments.  Flute and Tuba probably have the most - oboe the least. The air is used to set up vibrations. That being said, my understanding is that a smoother bore is preferable to a rough one. 
 
Interesting note - A rougher bore can decrease resistance to airflow. Think of the dimpled surface on a golf ball. 
 
Steve Ocone 
  
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Author: TomS  
Date:   2017-11-01 18:00 
 Or the rough texture of a shark's skin ... lowers the resistance moving in water. 
 
Some MP makers actually brush or texture the internal surfaces. 
 
On my R13/greenline, it looks like the upper bore was polished before the final reaming/drilling was performed ... you can clearly see the poly-cylindrical steps ... and the top most part of the upper joint is relatively rough ... 
 
Rough/smooth ... might not make a nickles worth of difference ... most important is the bore accuracy. 
 
Tom
  
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Author: gatto  
Date:   2017-11-01 20:02 
 I am wondering whether such quite deep looking "grain" textures inside the bore are prone to cracks? Any experience?
  
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