I'm building an organ with Cu pipes-3/4". Prior to soldering it ( just testing it) I can move my foot and languid ( soldered together) to the rear below the pipe body almost a whole diameter and it still speaks! I am astounded! Can anyone help me understand airflow around sharp edges? Thanks. (I have made 15-20 pipes with only modest success so far. )

Question

I'm building an organ with Cu pipes-3/4".  Prior to soldering it ( just testing it) I can move my foot and languid ( soldered together) to the rear below the pipe body almost a whole diameter and it still speaks!  I am astounded!  Can anyone help me understand airflow around sharp edges?  Thanks.  (I have made 15-20 pipes with only modest success so far. )

anonymous · Answer

|dw:1333168947020:dw|      This is drawing for henrypaz question.  I'm sorry it is not posted correctly.  Not sure how to do it.