A view of the case construction showing the internal bracing, the wrestplank with the nut already pinned, the external case sides, and the hole in the bottom to allow access to the drum.

A view of the corner case joint, bentside to cheek. The inside cheek is in sycamore, and part of the moderator pedal action is attached to the bellyrail, which is faced in oak.

A detail of the treble half of the instrument. The thrust of the wrestplank is conveyed by the metal gap spacer directly to the bentside by means of the internal bracing.

The bass end of the bellyrail showing the hole in the bottom, the pivot block for the drum and the internal bracing.

The close internal bracing of the case at the tail prevents the tail from twisting under the string tension.

A view of the treble end of the instrument showing the keywell and the front corner construction.

A view of the bass end of the keywell showing the cut-outs for the keyboard shift and the dampers.

The soundboard is supported by ribs attached to the underside, here showing the gluing of the ribs in process.

The same a little closer showing the method of holding the bars in position during the gluing.

After gluing, the ribs are shaped by hand and thinned out to the edge of the soundboard.

The soundboard bridge is made up of two pieces of finely grown, straight grained sycamore. The two pieces are first steamed and pressed to a form. After the two pieces are thoroughly dry they are then glued together against the same form to give the bridge its final shape - here showing the gluing of the two bridge sections.

Cabinet-maker Johann Durager fits the hitchpin-rail into the instrument.

Intern Lukas Brandl veneers the lid.

Cabinet-maker Willi Gregor trues the upper edge of the case.