mardi 17 janvier 2012

In the meantime...

While I was totally immersed in making my best cello scroll yet, Douglas wasn't day dreaming. After the hard work of "thicknessing" the rib wood to sheets, came the time of bending them. The first job in that category is to shape the inside of the corner blocks (and some like me also likes shaping the top and bottom blocks at that point) and give them the gracious flow of the "C" bouts. A fair bit of the "look" of the body of the instrument is determined by that particular central part... And that is another place were the style of the maker can be strongly expressed. In this particular case, and for consistency, Douglas just followed my templates.

The "C" ribs are carefully bent one by one. They are usually all glued when each one of them has been bent and then the maker can call it quite a  day !
The next step is to trim them and to shape the outside of the corners. There are two reasons why the outside of the corners are not shaped at same time as the inside. The first reason is because when the "C" ribs are glued and clamped, a lot of pressure is applied on the blocks and we cannot think of having a pointy corner there that would break for sure. The other reason is that when the outside of the block is shaped, the "C" rib is shaped with it so the outside rib overlaps the inside and the joint is less visible.


At that point the body of the cello starts looking excitingly like what it will be finished... with a bit of imagination... When the rib structure and the head and neck are finished, we can safely say that half of the instrument is completed. This is not quite it with us, but we can kind of see it coming.
Douglas likes bending all the "outside" ribs first and then glues them all at once. I would bend and glue as I go. We use a "bending iron" which goes up to 250ºc, although we seldom use that temperature. The rib wood is dampened and carefully bend hot to match the shape of the mould. This is a very tricky and fiddly job where time limit has to not come into consideration. Rushing the job could also result in breakage of the rib which would be a disaster when you think how long it takes to prepare it ! Finding the perfect balance between bending from the inside of the rib and then from the outside is what will bring it to marry the curves of the mould.

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