 The Clarinet BBoard
|
Author: SteveG_CT
Date: 2013-06-09 21:32
Franknh2010 wrote:
> Can a broken tenion, a chip out of the tenion, repairable?
Definitely repairable. Depending on how bad the chip is you can either have a patch grafted to the existing tenon or if the damage is severe you can have the entire tenon replaced. You should consult a repair technician to discuss your options.
|
|
Reply To Message
|
|
Author: Chris P
Date: 2013-06-10 01:33
Post a photo of the broken tenon so we can see the severity of it.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
|
|
Reply To Message
|
|
Author: Gordon (NZ)
Date: 2013-06-10 02:03
Think of tenons like teeth.
Chips can be patched/filled, but the result is probably not as secure as the original.
Or as with teeth, they can be "crowned", i.e. small blemishes filled, then made really secure with a metal (or polymer) ring covering part or all of the tenon.
Or a total replacement involving removing the current tenon and "grafting" a new one into the end of the body. Rather like a tooth implant.
|
|
Reply To Message
|
|
Author: Franknh2010
Date: 2013-06-11 02:02
Thanks for the info. I have a Penzel-Mueller that my repair tech is going to work on first. Just needs an overhaul nothing major. My Evette Schaeffer with the broken tenion will be next. The E-S is from 1953 so I want it back up to its potential. Again thanks for your input.
|
|
Reply To Message
|
|
Author: Chris P
Date: 2013-06-11 16:04
That will need replacing (grafting) as too much is missing to make a reliable repair. Just filling the missing section won't make for a strong tenon and chances are the inserted piece will keep breaking off due to how thin the lower joint tenon is.
A new tenon will be machined to fit the bell socket, the existing tenon is removed and the lower joint is counterbored to receive the tenon graft. It will be counterbored some way into the lower joint to give it strength and the lowest tonehole will have to be redrilled and undercut once the glue (usually epoxy when doing tenon grafts) has dried and the bore taper has been recut.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
|
|
Reply To Message
|
|
Author: Franknh2010
Date: 2013-06-11 19:50
Thanks, as soon as I've had my Penzel-Mueller fixed up, I'll have this one repaired too. Again thanks for the help, at least it's repairable.
|
|
Reply To Message
|
|
Author: rtmyth
Date: 2013-06-11 19:54
My tech can and does these repairs. He is in TN, and has a web site at Larry Mueller.
richard smith
|
|
Reply To Message
|
|
Author: SteveG_CT
Date: 2013-06-12 02:40
Chris P wrote:
> A new tenon will be machined to fit the bell socket, the
> existing tenon is removed and the lower joint is counterbored
> to receive the tenon graft. It will be counterbored some way
> into the lower joint to give it strength and the lowest
> tonehole will have to be redrilled and undercut once the glue
> (usually epoxy when doing tenon grafts) has dried and the bore
> taper has been recut.
>
For future reference, how much does a procedure like this typically cost? I'm guessing that were talking about at least a couple of hours of labor
|
|
Reply To Message
|
|
Author: Gordon (NZ)
Date: 2013-06-12 14:39
"I'm guessing that were talking about at least a couple of hours of labor"
Yes, so that is what it would cost, depending on the labour charge.
But a savy technician would also charge for his lathe time, as any engineering workshop would, especially as to do this sort of work, he has to have a lot of money tied up in a lathe that is used very little of the time.
Some technicians specialise in tenon work (and subcontract to other technicians, especailly as many technicians do not have a lathe.) And I would expect sukch specialists to take half as long. And the machine charge could be less on account of it being in more constant use.
One such workshop that advertises in NAPBIRT'S "technicom" magazine is Hurk's Place, 553 Hwy. 67, Fontana, WI 53125, (262) 374-1688
|
|
Reply To Message
|
|
The Clarinet Pages
|
 |
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
