Nitrocellulose lacquer cracks retina

Mohawk finishing products m1020451 finishers choice clear nitrocellulose lacquer flat. High solids nitrocellulose lacquers lawrencemcfadden. Nitrocellulose lacquer does have some nasty habits. Im not saying nitrocellulose lacquer finishes arent good finishes, and arent good for a guitars tone, but they dont allow the wood to breathe. Mohawk finishing products m1020541 mohawk finishers. Nitrocellulose lacquer is made by taking cotton and treating it with sulfuric and nitric acid, generating an acidic pulp, which can be strained to produce a watery resin. Like any other lacquer, it can be used to finish wood products and keep painted surfaces shining, though there is much more to it than that.

The term lacquer is used for a number of hard and potentially shiny finishes applied to materials such as wood or metal. Choroidal thickness and biometric markers for the screening of. Patchy atrophy and lacquer cracks predispose to the. Inhalation exposure to nitrocellulose lacquer and related. Buy dartfords gloss clear nitrocellulose guitar lacquer 400ml aerosol at amazon uk. I was in a store recently that sold sculpture and mold making supplies and they had quarts of nitrocellulose lacquer. Longterm natural outcomes of simple hemorrhage associated. Also, in the fellow eyes of patients with preexisting myopic cnv, the incidence of developing cnv in the second eye is higher than that in the eyes of patients without preexisting cnv. Forming a very thin layer it allows the wood to resonate freely with little restraint. The top is faded, there are numerous white water marks, and the lacquer is crystallized and flaking in some areas. Custom axe hugger slipon protection for your guitar i show you our custom feathers axe hugger fresh from our factory. There is no irregularity or distortion of the neurosensory retina or retinal vessels overlying the lacquer cracks.

Add to cart add to cart add to cart add to cart add to cart add to cart. Other, more modern finishes are catalyzed polymers and as they cure, they undergo chemical changes that make them insoluble in anything. In particular, eyes with patchy atrophy or lacquer cracks around the macula have a higher risk of developing myopic cnv around 20%. Looking for sources of nitrocellulose lacquer paint is. The idea is, you want the solvent to dissolve the edges of the cracks and make them flow into each other. Are all or most nitrocellulose lacquers close enough to use. The epa also has iris, that should have information on the different solvents plus the doesresponse and exposure. They represent healed and mechanical breaks of the retinal pigment epithelium, bruchs membrane, and choriocapillaris complex. I usually dont recommend trying to fix such checks, because they are often an inevitable part of the nitrocellulose lacquer aging process. However, lacquer cracks are a classical symptom of myopic degeneration and while your condition may remain stable for many years, the odds are more in favor of problems as you age. A thin acrylic lacquer finish will be basically indistinguishable from nitro, except that it wont yellow and crack over time. Lacquer cracks are considered to be healed mechanical fissures in the retinal pigment epthelium rpebruchs membranechoriocapillaris. Nitrocellulose lacquer i told him how oxnard wasnt producing guitars yet with nitro, and that we had heard about problems and challenges theyre experiencing. Nitrocellulose lacquer is spincoated onto aluminum or glass discs, then a groove is cut with a lathe, to make oneoff phonograph records, used as masters for pressing or for play in dance clubs.

A project from the american society of retina specialists. Nitrocellulose lacquer is made by taking cotton and treating it with. The lacquer is made by dissolving nitrocellulose pellets in an appropriate solvent to bring it to a liquid state. The eyes of men have a 2fold incidence of lacquer cracks as compared with those of women. Checking will vary according to the extremes the instrument has been through. Herein, we report a case of a young man with an unusual localization of the lesion in the midperiphery of the eye. Ive checked it out and in most respects, it wasnt anything with any particular magic thats for sure except that the plasticisers they used, you wont find anymore. A discussion started in 2002 but continuing through 2019. Unfollow nitrocellulose lacquer to stop getting updates on your ebay feed. Nitrocellulose can appear as a pulpy, cottonlike solid when dry. Before you apply the lacquer, be sure all of the rough spots are smoothed and the old finish has been stripped evenly. The progression of lacquer cracks in pathologic myopia. Lacquer cracks have only been observed in the posterior pole of highly myopic eyes. They are still in biz, but do not make the old stuff any more and havent for decades.

Lacquer cracks are almost always associated with a temporal crescent of the optic nerve head, and the lesions tend to be continuous with the crescent in many cases. Jones, md, phd, retina center, minneapolis, mn, uploaded on oct, 2012. Nitrocellulose lacquer, often referred to as nitro or cellulose lacquer, is a classic finish used on cars, instruments and furniture up to 1970s. A good example here is gibson famous for old cracked lacquer finishes. The good part is all the mahogany veneer is tight and sound. Nitrocellulose lacquer is also very toxic and can be flammable if not handled properly. It is admired for its high sheen and glossy quality. It is normally applied as lacquer spray paint with polish to improve the furniture appearance and durability. Lacquer cracks consist of ruptures in the retinal pigment epithelium rpebruchs membranechoriocapillaris complex. A lot depends on exactly what the original finish was, and how clean it is, how clean the cracks are, and so on. When the lacquer cracks are large, choroidal vessels may traverse the lesion posteriorly. The nitrocellulose and acrylic components themselves act as binding agents in the paint that then need to be mixed in solvent in order to be sprayed properly onto a guitar, or indeed a car. Mohawk finishing products m1030540 mohawk lacquer for brass satin, clear.

A wide variety of nitrocellulose lacquer options are available to you, there are 281 suppliers who sells nitrocellulose lacquer on, mainly located in asia. In my opinion the best thing about nitrocellulose lacquer is that it is an evaporative finish, meaning that it can always be redissolved in its original solvent. Lacquer cracks conditionkeywords pathologic myopia, lacquer cracks imaging device fundus camera description color fundus photograph of a 48yearold woman with lacquer cracks in the setting of pathologic myopia. Read the directions on the nitrocellulose lacquer for application instructions. Nitrocellulose lacquer is a material which has many uses both inside and outside the home.

That said, nitrocellulose lacquer will check spontaneously if it is applied too thickly. Lacquer cracks are typical clinical findings in a highly myopic fundus and should alert the clinician to the possibility of retinal hemorrhage with or without cnvm. Looking for sources of nitrocellulose lacquer paint. Making your own nitrocellulose lacquer can be done using cotton and treating it with sulfuric and nitric acid. My wife has a 1950 singer sewing machine the machine is dang near perfect, the cabinet not so much. However, when color replication needs to be accurate, a process like dorns allows for precise color communication. How much unthinned celly lacquer approx is needed for spraying one electric guitar. This report describes comparable lesions in the retinopathy, globe enlarged rge chick. You cant even get the original solventbased nitrocellulose finish done legally in the us, plus the modern nitro is probably over a sealed wood anyway, as it has been on fenders since the fullerplast days. Lacquer cracks are found in the posterior fundus of 4.

Lacquer is nearly as deep and clear looking, but it requires spray equipment and safety equipment. Depending on the manufacturing process, nitrocellulose is esterified to. While no longer used to lacquer automobiles it remains a popular finish for guitars and furniture, particularly on vintage restoration and reproduction pieces. Retinal physician easily misdiagnosed retinal entities. Nitrocellulose lacquer is known as an evaporative finish, in that it dries very quickly, sands easily, has a high solids content, and dries to a crystal clear finish. This type of lacquer, which dries quickly is used in auto finishes and on wood. Lacquer cracks are uncommon findings in the posterior pole of highly myopic eyes. All our sample neck colour photos show three coats of the labelled nitro tint laquer on top of a clear sanding sealer base. They represent healed and mechanical breaks of the retinal pigment. Very easy to make and perfect for homemade fuses or if you need something that catches fire easily. Spontaneous lacquer crack lesions in the retinopathy. This is an extremely common, somewhat expected condition on older instruments with lacquer finishes. Lacquer cracks are considered to represent mechanical fissures in the retinal pigment epitheliumbruchs membranechoriocapillaris complex secondary to eyeball elongation in highly myopic eyes. I bought a couple but am wondering if it will work as well for instruments.

One of the most disappointing of those is the tendency to check or crack with a sudden drop in temperature. Full text lacquer cracks observed in peripheral fundus of eyes with. Lacquer crack, first described by salzmann in 1902 16, represents breaks in the bruchs membrane. The modern catalyzed nitrocellulose lacquer is very different from the original and is extremely toxic and carcinogenic. It is a clear liquid to semisolid when dissolved in alcohol, acetone or an etheralcohol mixture.

There was nothing magical about nitrocellulose finishes. Ive done this with some success, but its iffy at best. Clear nitrocellulose lacquer 400g aerosol spray can. Look for lacquer cracks in high myopes for early warning.

The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists. Once the learning curve is behind us, once the equipment is owned, its pretty easy to apply, very forgiving of mistakes the guitar turned out fine once the problem was finally remedied. The top countries of suppliers are india, china, and india, from which the percentage of nitrocellulose thinner supply is. Lacquer cracks in pathologic myopia retina image bank. Checking cracking a nitro guitar finish nitrocellulose relic tutorial. The top countries of suppliers are india, china, and india, from which the percentage of nitrocellulose lacquer supply is. I realize that many here use behlen nitrocellulose stringed instrument lacquer for their finishes. The lownitrogen form of nitrocellulose is soluble in.

Lacquer crack lesion lcl, a complication of myopia in human patients, is characterized by loss of retinal pigment epithelium and breaks in bruchs membrane. Nitrocellulose lacquer thats closest to the old stuff. The resulting resin is then combined with a number of fast drying solvents to produce the finished lacquer. Theres a product called blush remover that might work the same way. It can be spot repaired easily and when buffed, shows a beautifull shine. Sand sponges are useful for sanding the curved areas of the finish.

Nitrocellulose lacquer paints were in fact developed by dupont in the 1920s specifically not to breathe, but to be a sealant against the forces of nature for automotive applications. A wide variety of nitrocellulose thinner options are available to you, there are 82 suppliers who sells nitrocellulose thinner on, mainly located in asia. Lacquer finish implies a surface finish that creates a fine smooth wood layer on furniture to improve its functional characteristics. As an instruments wood expands and contracts with moisture content stress is placed on the finish. You can use a nitrocellulosebased sanding sealer under my lacquer and i sell a. Its hard to say as there are so many variables such as finish thickness and how good your technique is. A lacquer or paint finish on an acoustic instrument is designed to protect the wood from dirty fingermarks, grease, tomato sauce spills etc. The main ingredient in lacquer paint is nitrocellulose lacquer that assists in dissolving lacquer coat. Here it is, the tutorial on how to make nitrocellulose lacqure. Two 60s lake placid blue jazzmasters but the left guitar has a nitro top coat, which has yellowed over time. How to refinish a guitar with nitrocellulose lacquer. Nitrocellulose lacquer has been used on guitars since the fifties and sixties because of its excellent characteristics. Nitrocellulose lacquer yellows and cracks as it ages, an effect seen on many. I would search for other names of nitrocellulose lacquer, there is a link below.

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