 The Clarinet BBoard
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Author: hans
Date: 2006-01-19 22:55
Attachment: Before.JPG (60k)
Attachment: Preparation.JPG (58k)
Attachment: After.JPG (64k)
In case anyone else has the same problem, this could save the cost of buying a new case.
Some of the support foam in my clarinet case had collapsed to the point where the top keyed section was no longer adequately supported. Although I have ordered a replacement case and have a "backup", I wanted to see if I could restore the original case, which is in good condition otherwise.
Using a utility knife, I cut a very small opening in the fabric to allow access to the place where the foam had collapsed, and used painter's tape with low adhesive strength to mask the area around the cut. Using polyurethane expanding foam (the type with a low expansion rate used for home insulation around windows), I inserted the nozzle through the opening and injected short bursts of foam until the collapsed area started to show signs of filling.
The result was very satisfactory (pictures are attached) and the case is as good as ever.
Post Edited (2006-01-19 23:12)
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Author: BobD
Date: 2006-01-19 23:00
Good job, Hans. You must have a delicate touch as I usually overfill anything I use that stuff on.
Bob Draznik
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Author: hans
Date: 2006-01-19 23:07
BobD,
I have had the same overfilling problem too in other projects. The low-expansion foam seemed to give me more control over the procedure than the "regular" stuff.
Hans
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Author: tictactux ★2017
Date: 2006-01-19 23:11
Will the foam only expand (a little) or will it produce a clarinet too?
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Ben
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Author: hans
Date: 2006-01-19 23:19
tictactux,
I think you may be thinking of some other BB which deals with miracles :-)
Seriously, the worst thing that can happen is injecting too much foam. Then the case would have to be taken apart to remove it. My case appeared to be glued together by the manufacturer so that it would be difficult to disassemble it without damage.
Hans
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Author: tictactux ★2017
Date: 2006-01-19 23:30
Drats. Your third picture suggested otherwise.
The normal "construction grade" filler foam expands like fresh dough (remember Woody Allen in "Sleeper"?), one must be really careful with that stuff. There's low-expansion foam for finer tasks, but better "blow" twice only a bit than just once too much.
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Ben
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