PHOTOGRAPH AND NOTES ON WOOD FLUTE TENON JOINTS
The above three photographs illustrate the tenon joints on the head and foot of the instrument
The first photogtraph shows the fitting of a British Flute Maker's Guild silver headjoint which fits inside the joint as on a conventional all silver flute. The loose tenon cap is for aesthetic purposes only. The reason this cap is loose is that the head is also used on the owner's Muramatsu flute which has had a new socket fitted to accommodate the changed diameter of the silver head.
The second photograph shows the body tenon in detail
The lower photograph shows the foot joint which is fitted in a similar way to the head joint.Many wood flutes are/were made with a single continuous body / foot and one of the reasons for this is that in order to make a properly strong joint, the bottom key on the body was often moved up slightly. This made the E slightly sharp. Different sorts of joints for wood flutes may be seen on Robert Bigio's Web site
The above photograph and notes are as accurate as my knowledge on the subject permits.