Pottag rebuild II trouble with prior work.

By: frugalhorn

Jul 10 2012

Category: Uncategorized

1 Comment

Aperture:f/2.8
Focal Length:6mm
ISO:200
Shutter:1/0 sec
Camera:DMC-FZ5

Work continues on the Pottag. As I began to rebuild the Pottag, it became apparent that then it was re-lacquered  the process caused many solder joint to fail. ( too hot ??)  Around the valve cluster there have been 23 failed solder joints. Above the pix shows four re-solder points to re-work joints that have failed. Several heavily patched branches were replaced,  (one had three patches).  I have not kept an extensive collection of pix of the work done. There have been two other horns on the bench and its been too hot to fool around with starting ans stopping to take pix. The Pottag is now a detachable flare with a Conn 6d, 9d, 10d ring set. The valves have been plated and hopefully when together it will be a good horn. Rebuilding a horn is not unlike firing pots in a kiln. When completed you find out what you’ve got. Your job is to make sure that the horn is completed with good solder joints, the alignment is pleasing, and the valves have an excellent seal, but how the horn plays is only determined when you give it the first honks, and then to blow it in (What ever that means…) It seems that some minor molecular adjustments occur when the horn is played for a while. If this is a real thing or a mental thing, I don’t know, I will go on the record and state there is seen to be a  bit of smoke an mirrors here and it is beyond my limited mind. I’m sure the engineer types can give us an understandable thesis to consider….I wonder what Lawson would say…. If you have opinions or ideas, please share them.

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One comment on “Pottag rebuild II trouble with prior work.”

  1. Richard Prankerd from Australia comments on facebook:
    “Bruce, I note you say “It seems that some minor molecular adjustments occur when the horn is played for a while. If this is a real thing or a mental thing, I don’t know, I will go on the record and state there is seen to be a bit of smoke an mirrors here and it is beyond my limited mind. I’m sure the engineer types can give us an understandable thesis to consider….I wonder what Lawson would say…. If you have opinions or ideas, please share them.” This is of a little interest, as I am working on extending my upper register a bit. I recalled an anecdote in Denis Wick’s book on trombone playing. A student could not play a certain high note on his instrument, even though he could play other notes around it. Denis Wick took the trombone and blew the required note a number of times, very soft and very loud. when he gave the trombone back to the student, the student could play the note as well. Is it the structure of the instrument that gets rearranged, or the player’s neurology? I was discussing this point with Andrew Joy and he was convinced it’s the neurology. I would be interested in your opinion and others as well.”

    Like


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