 The Clarinet BBoard
|
Author: clarimad
Date: 2015-06-30 11:48
I'm very used to recorking clarinet tenon joints but have been asked to recork a tenor recorder. The cork I need to use is nearly 3mm thick and need advise on how to shape it into a circle without splitting the cork.
Maybe I should be using cork and thread on this? Any suggestions please.
|
|
Reply To Message
|
|
Author: Tony F
Date: 2015-06-30 13:48
Cut the tenon cork to slightly oversize using cork slightly thicker than what you have measured the thickness to be. At this point cut a slight chamfer along the long edges on one side and then put the cork chamfered side down on a firm surface.
Using something like a length of wooden dowel about an inch or so in diameter roll the cork as though you were rolling pastry. This will break up the fibrous structure of the cork allowing it to take the shape of the tenon. As you roll the cork it will spread slightly, so you will need to retrim the length and width. As you roll the cork it will adopt a curl with the chamfered side out, and this will make it easier to fit it to the tenon.
When you have the cork prepared coat the cork and the tenon with an even coating of a good contact adhesive and leave for a few minutes until just touch dry. Carefully position the end of the cork and roll it into place on the tenon. Do this with great care, because you only get one go. Get it right.
When the end of the cork is reached carefully trim to exact length and firmly press it in place. Using something like the edge of a ruler, roll the tenon along the edge of the ruler to apply pressure to a small area of the cork. This will ensure even seating. The chamfered edge will allow the cork to easily engage with the socket without snagging. Sand the cork back as necessary to fit the socket.
Tony F.
|
|
Reply To Message
|
|
Author: Chris P
Date: 2015-06-30 18:21
If the recorder is made from maple, pear or boxwood, then I'd be inclined to wrap thread around the tenon slots first to build them up and also to give the tenons added strength, then glue 1mm-1.6mm cork on top of that and shape it as normal.
If it's made from more dense timbers such as rosewood, kingwood, bubinga, grenadilla or ebony and also plastics, then glue some heavy duty rubberised cork into the slots to build them up, then fit a natural cork strip over the top of that. Or you could fill in the tenon slots with superglue and wood dust, then recut them to a shallower depth using a lathe.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
|
|
Reply To Message
|
|
The Clarinet Pages
|
 |
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
