Derek McCormick’s Violin Blog

Making a violin and other violin-related topics

Fitting the Back Linings

Unfortunately I forgot to take photographs of the early stages of fitting the back linings. However, I can add these at a later stage when I come to fit the front linings – the process is exactly the same.

The linings are narrow strips of wood which are glued inside the ribs (see diagram). They have two functions, Firstly, they add some strength to the ribs and secondly they provide a better glueing surface for attachment of the backand front. The ribs are only 1mm thick which would provide a very narrow and insecure surface to glue the back  or front onto. The addition of linings increase the the width of the glueing surface to about 3mm which is a much firmer base for attachment.

linings

(A) I use willow for the linings and start by preparing long strips about 9mm wide and 2mm thick. These are cut to the appropriate length and bent to the shape of the bouts using a bending iron. They are then glued into position. They are positioned about 2mm proud of the ribs and the top edge planed down to be level with the ribs and the lower edge is profiled with a knife to produce a wedge-shaped cross section (not yet completed in the photos)

It is important to achieve a good fit between the linings and the ribs and between the linings and the blocks.

(B) It is important to achieve a good fit between the linings and the ribs and between the linings and the blocks. This photo shows to the right an upper bout lining glued in place. To the left is the C-bout lining which is morticed into the block to provide added security because the natural tendency of the curved wood to straighten out over time could lead to them detaching from the ribs. On the other hand any straightening tendency in the upper and lower bout linings would tend to push them more firmly against the ribs.

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November 22, 2008 - Posted by | (04) Fitting back linings

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