Slab cut violin back crack

A onepiece, quartered back is cut similarly to the two piece but from a single piece wide enough for the entire back. A soundpost crack is tough to repair and results in. The table is a finely grained spruce top as is the bridge a finely cut aubert a mericourt bridge over a newly strung set of pirastro tonica strings to bring out the warmth of the. Next, you need to draw the outline of your violin with a metal scribe, using your ribs as a template. This is a factory, exschool violin that was selected because it had such a bad tone, even after a new bassbar was fitted. The crack on the lower rib resulting from the impact. A slab back tends to produce a deeper, rounder, less edgy sound.

The text is written by an actual violin maker, in a very clear and lucid style. Violins made between 18751899 at the national music museum. Shrinkage cracks in poured concrete are easily recognizable and can be distinguished from other types of cracks that occur later in the life of a foundation wall or floor slab the photograph of cracks above were taken of shrinkage cracks in a concrete slab floor in a home built in 2006. Antonio stradivari, violin, cremona, 1736, the muir. When a concrete slab cracks and sinks, this indicates a more serious structural issue. A simple crack in a concrete slab isnt necessarily a problem. This is the first article in a series i will be writing on the subject of cleats and crack. As shown in the photos above, we have an example of a crack that runs about 2 inches above the left fhole of a viola. The wood to either side of the crack does not move independently when very lightly flexed. Without the back cut, vibrations from the saw could likely cause chipping or even break off a chunk.

Side view of the spruce top crack above the left fhole the crack viewed from another angle. But many greatsounding violins have also been made from the slab maple. The straightline gaps between the slabs has enlarged, and some cracks are as wide as 2 inches. Ive never used slab cut backs because of the durability cracking. The back and ribs are typically made of maple, most often with a matching striped figure, called flame. The center seam is visibly open and cracks can be seen on the bass side fwing a long crack descending from the treble fwing. Labeled panizzi giovanni battisti violin italy 1933. I gave the wood to a friend who made cleats to close cracks on his guitar. The onepiece back, ribs and scroll are of somewhat plain maple the back may be of a slab cut, but its not easy to discern. This is the first article in a series i will be writing on the subject of cleats and crack reinforcement methods. However, the crack is in a curve line rather than the usual straight line.

The dark brown varnish is somewhat opaque and worn in places. The order was received and all except the wood was correct and intact but the wood patch three ofthem taped together was ok. The rough flitches of wood used for the front and back plates are glued. It was worth working on because of the pretty slab cut one piece back see right. The driveway slopes down from my garage to the street. Particularly on the back, where the wood is quar ter sawn, the varnish. Foundations crack or become damaged for many reason. The slab cut onepiece maple back, ribs, neck and scroll are of somewhat plain wood, but not unappealing. This can work well for violas and cellos, but many greatsounding violins have been made from slab cut wood as well.

It had a bassbar crack most of the length of the violin but then it did not. Klingenthal carl schneider 44 spruce and maple violin. Included is detailed handson information on how to make these acoustical adjustments yourself. It is more of a problem when a slab is tied into another structure like a wall with rebar. This wedge is cut down the middle, opened like a book, and the thick edges are then glued together. Use a pencil to go round that outline using a washer to create a distance of 2mm between the ribs and the edge of the violin. Violin top crack repair fixing a short crack on a violin top. Making and installing cleats triangle strings violin. A slab cut back on a cello or viola works well though, as slab cuts will have darker sound qualities, much like. Backs are also purfled, but in their case the purfling is less structurally important than for the top. When in a rectangle shape, the rectangle ratio seldom exceeds a length to width ratio of 1. Particularly for violin, since quarter cut wood has a more forceful sound that will carry. From the top or back, the body shows an hourglass shape formed by an upper bout and a lower bout. Panizzi giovanni battista fece in san remo anno 1933 hand written a fine violin of golden amber varnish over an orangeyellow grout with no cracks or seam openings slight ware on varnish.

A violin consists of a body or corpus, a neck, a finger board, a bridge, a soundpost, four strings. A lateral tension can stop some of the plates vibrations. This article will discuss the concept of cleating cracks, provide a simple method for making cleat stock, and fitting cleats. Our finest spruce tops were cut over 50 years ago and are of a quality that is unattainable today. Europe has a long tradition of violin making, repairing and restoration. For cracks with a particularly strong tendency to slide away there is a more sophisticated clamping system. It could be worth the work on some occasions to raise the ribs. The neck is slab cut, with a little piece of wood behind its base.

While these stone counters are extremely durable and can last for many years, there are times when the surface can develop cracks. Is using slabsawn wood for violin ribs just plain wrong. The project gutenberg ebook of violin making, by walter h. The instrument bears a pulp wood paper label reading, carl schneider, violin, macher in klingenthal. For over 10 years, i have been writing a book for the beginning violin maker and repairman violin making and repair for the novice. A onepiece slab back is slabbed through the log, just like most boards that come from the lumberyard. Fine itaian labeled violin luigi azzola fecer in torino anno domine 1940 a lovely instrument with a great tone and amazing projection. A slab back, all other things equal, tends to produce a deeper, rounder, less edgy sound. Sound post cracks are very common in the long life of a violin family. Backs may be onepiece slabcut or quartersawn or bookmatched twopiece quartersawn.

Control joints, expansion joints and cold joints in. Georg kloz, 17 the violin connection of southern africa. I am looking at an one piece back violin with a hair line crack in the back near the sound post area. Repairing an instrument with a sound post crack triangle. So as violin making evolved, quarter cut wood was the clear winner for both strength and sound. The book has 300 pages and over 450 pictures, it is being published as an ebook, on.

So i surmise that there is still some good wood left acting like a hinge. Roots may cause cracks, however, foundations rarely crack from the roots pushing up, but from them drawing the moisture out of the soil under the foundation due to transpiration. The label is mostly printed with 1777 written by hand in black ink. The work is quite ordinary, with the exception of purfling and scroll.

Efficiently making and installing cleats to reinforce cracks is a. I have a violin with a 1 12 soundpost crack in the back. Granite countertops are installed in more homes today than ever before. Here is helpfull information on violin making and acoustical guides to improving new or existing instruments. I went tolowes and bought a spruce board and ripped it to size and prepared it to patch the hole where the bridge has destroyed he wood when it. Sound post cracks are very common in the long life of a violin family instrument. Cracks are even supposed to occur along control joints such as those built into a sidewalk.

Step 7 after making the back cut, reposition the saw at the opposite end of the slab and cut. Hello all, im a selflearning newbie making my 1st violin and i have a question about the woodgrain orientation of the ribs. This violin has no cracks, however it has several scratches on the varnish of the top, of its lower part, and of the side part of the tailpiece. This is then cut into two interlocking parts using a fretsaw and glued to the plate only at the back part of each side. Over 300 pages of interesting and useful information about violin making and adjustment, as well as about 100.

Hannibal fagnola fecit taurini anno domini 1929 a lovely instrument in great playing condition with minor repair or scratch above the bass side of the fingerboard. Slab cut only acceptable if the wood is of high quality. In addition to the concrete mix and the weather conditions, determining when to saw concrete is based on the concretes hardness as well as the type of cutting equipment used to make the saw cuts. A slab cut back on a cello or viola works well though, as slab cuts will have darker sound. Violins on sale german violin the violin connection of. When repaired properly with a sound post patch, the instrument can continue to be a reliable tool beyond your lifetime and perhaps even improve its tone. Mayson, with thirtyone fullpage photo etchings, illustrating the process of violin making in every stagefrom the rough slab of wood to the finished instrument. After close examination, we noticed that the back piece is a slab cut as described in the attached diagram. It was worth working on because of the pretty slabcut one piece back see right.

David langsather violin maker and researcher, located in. Control joints in concrete slabs, which are poured on grade on top of the ground, are placed so that the concrete is in a square or rectangle pattern or shape. In addition to looking bad, a sinking slab can create an uneven surface that poses a safety hazard. Workmanship is good throughout, notably in the fs and scroll, which is wellbalanced and elegant. Backs may be onepiece slab cut or quartersawn or bookmatched twopiece quartersawn. If they crack with a twist, the whole tree will have the same twist. I bought a really nice piece of slab cut quilted maple for a single piece violin back plate and i saw in violin making books that the matching ribs are made from quartersawn wood. While some of these cracks are natural and part of the stone, others are caused by use or. Not pictured is a soundpost crack and an additional crack traveling up from the top fwing. This instrument is unusually highly arched, even by german standards.

Before we describe crack, movement, and damage patterns and diagnosis in concrete slabs, we need to introduce three different types of poured concrete floor slabs. The cracks in this case ranged in width measured across the crack from hairline less than 116 to. The top is always made from quarter cut finegrain spruce while the back can be made from either slab or quarter cut maple. A back crack is so much more problematic than a top crackwhich is. Efficiently making and installing cleats to reinforce cracks is a necessary skill for luthiers. Then, if your slab patio, driveway, or sidewalk cracks, it will most likely do so along a precut joint and can, therefore, go virtually unnoticed. Because it is inlayed to approximately half the thickness of the edge it prevents the further continuation of cracks that often begin. Repairing an instrument with a sound post crack triangle strings. The grain pattern in this shape is the strongest and most stable orientation for a violin back.

What are the causes of cracks in granite countertops. Use the flattened slab cut side as a reference and square the quarter cut. Something interesting about both of these cellos is that while were taught to think that slab sawn wood like this is weak and liable to crack slabbed maple violin backs certainly do this the tops on both of these cellos were both in unusually good condition for instruments of their age. Our bosnian maple is particularly handsome as are our 1piece slab and half slab cut backs. Popular lecture style, with photographic illustrations. The indicative fagnola red varnish with a golden yellow undercoat is. Our violin tonewood is all very well seasoned ready to work with.