Tenon joints are the connectors between the different body parts. There acoustical impact
had often been overlooked. They are available in different versions:
1. The traditionally tenon for clarinets and bassoons has a tapered tenon and receiver in the instruments material with cork as a connector. The different body parts need to be pushed together all the way to give a good connection. As soon as the parts are pulled out, the joints will wobble.
Wooden tenons can swell, as soon as the wood becomes humid. To give the receivers more strength are they usually enhanced with metal rings. The receiving side has therefor no chance to expand, which will make it impossible to push the joints all the way together. In that case the upper part, above the cork, will need to be diminished in diameter. As soon as the wood dries out, the joints might wobble. The best solution for that problem is a cylindrical metal joint connection, which can be added to every instrument.
2. Enhanced with a metal cap. Some models have a metal cap at the end of the tenons. They protect the tenons from breaking.
3. The cylindrical tenon and receiver in the instruments material with natural or artificial cork as a connector is the preferred style for recorders. The cylindrical tenon allows the player to pull out the joints to tune the instrument. Since all body parts are made out of the same material, swelling wood is usually no problem.
4. Cylindrical metal tenon and receiver with cork as a connector. These are by far the best and preferable tenons. Receiver as well as tenon are made in metal, which can be fitted very accurately. They allow to pull out the different joints to adjust intonation. Swelling of the wood is no issue. They are used on oboes, English horns and Lohff & Pfeiffer offers them also on clarinets, basses and basset horns. See also LP metal tenon system.