GRENADILLA
Sold in (usually) 6" lengths (based on availability). Priced by the inch. Square or round section.

Jeff’s “Tenon Sleeve” Recipe 

A tenon sleeve is a simple, elegant and affordable way to permanently repair the fit of a tenon joint. Any technician can easily master this procedure if one has access to a machine lathe. The conditions that indicate the need for this are: a wobbly or loose fit of tenon to receiver, cracks or chips in the tenon that don’t require complete tenon replacement.

Please bear in mind that no matter what you do to the cork, if you don’t have integrity in the mating parts of the joint, you won’t have a good joint. The cork only serves to seal the joint, and to facilitate assembly.

If you don’t have a good fitting joint, you may have other issues. Think about the bridge key adjustments on a clarinet. The following dimensions are appropriate for Bb clarinet.

Step 1: Machine the old tenon down to .750".

Step 2: Machine sleeve from grenadilla. Drill a 3⁄4" center hole down the bore of the block deep enough to fit over the old tenon. You’ll need to center drill, then step drill up to 3⁄4". No need for a bored or reamed interior. Unless you can’t hold a 3⁄4" drill in your tailstock. Face the block to the length of the old tenon

Step 3: Glue the new sleeve onto the old tenon. Use 105104 Slow Set epoxy for this. Let this glue up overnight.

Step 4: Machine the OD (outside diameter) of the tenon area to fit the instruments socket (receiver). Cut a cork track into the tenon.

Step 5: Recork the tenon.