All our sample neck colour photos show three coats of the labelled nitro tint laquer on top of a clear sanding sealer base. This report describes comparable lesions in the retinopathy, globe enlarged rge chick. In particular, lacquer cracks, myopic schisis, or choroidal neovascularization in the macula area and holes or tears in the periphery of the retina. Very easy to make and perfect for homemade fuses or if you need something that catches fire easily. Look for lacquer cracks in high myopes for early warning. High solids nitrocellulose lacquers lawrencemcfadden. 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. Emergency telephone number intrepid coatings chemtrec us tra nsportation. Add to cart add to cart add to cart add to cart add to cart add to cart.
The top is faded, there are numerous white water marks, and the lacquer is crystallized and flaking in some areas. Lacquer crack lesion lcl, a complication of myopia in human patients, is characterized by loss of retinal pigment epithelium and breaks in bruchs membrane. Not all nitrocellulose lacquer is the same, beware of inferior types which will not give as good result. Are all or most nitrocellulose lacquers close enough to use. Of these 37 eyes, the number of lacquer cracks increased in 14 eyes and turned into other myopic fundus changes in 25 eyes. How to tell if a guitar has a nitrocellulose finish. He said something that i had not heard, namely, that after spraying nitro on a guitar, you need to wait 2 3 months for it to cure and settle before moving on with it. It is a clear liquid to semisolid when dissolved in alcohol, acetone or an etheralcohol mixture. How to refinish a guitar with nitrocellulose lacquer. A good example here is gibson famous for old cracked lacquer finishes. While no longer used to lacquer automobiles it remains a popular finish for guitars and furniture, particularly on vintage restoration and reproduction pieces. Sand sponges are useful for sanding the curved areas of the finish.
It can be spot repaired easily and when buffed, shows a beautifull shine. Checking will vary according to the extremes the instrument has been through. The epa also has iris, that should have information on the different solvents plus the doesresponse and exposure. Pdt with verteporfin fda approved antivegf offlabel. The term lacquer originates from the sanskrit word laksha representing the number 100,000, which was used for both the lac insect because of their enormous number and the scarlet resinous secretion. Lacquer cracks have only been observed in the posterior pole of highly myopic eyes.
My wish is to only sell the very best quality items. The finish on those instruments is often twice as thick as martins or even significantly more that that. 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 discussion started in 2002 but continuing through 2019. Retinal physician easily misdiagnosed retinal entities. This type of lacquer, which dries quickly is used in auto finishes and on wood. 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. Checking cracking a nitro guitar finish nitrocellulose relic tutorial. 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.
How can i safely recycle nitrocellulose contaminated waste. The term lacquer is used for a number of hard and potentially shiny finishes applied to materials such as wood or metal. The idea is, you want the solvent to dissolve the edges of the cracks and make them flow into each other. If you fletch a lot of arrows, nitrocellulose glue is just what the fletcher ordered. Lacquer cracks lacquer cracks are formed by spontaneous ruptures in the bruchs membrane and small haemorrhages may develop within the lacquer cracks. Check out the deal on nitrocellulose adhesive fletching glue at 3rivers archery supply. As an instruments wood expands and contracts with moisture content stress is placed on the finish. 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. Inhalation exposure to nitrocellulose lacquer and related. Before you apply the lacquer, be sure all of the rough spots are smoothed and the old finish has been stripped evenly. This glue works best on arrows sealed with gasket lacquer.
Though i would agree that most cases of lacquer checking seems to happen due to abrupt temperature changes, most notably when a cold guitar is taken into. It is admired for its high sheen and glossy quality. When the lacquer cracks are large, choroidal vessels may traverse the lesion posteriorly. Two 60s lake placid blue jazzmasters but the left guitar has a nitro top coat, which has yellowed over time. The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists. The good part is all the mahogany veneer is tight and sound. Read the directions on the nitrocellulose lacquer for application instructions. Lacquer cracks are considered to be healed mechanical fissures in the retinal pigment epthelium rpebruchs membranechoriocapillaris. These changes included patchy atrophy, diffuse atrophy, and choroidal hemorrhage with. Pohs, armd, angioid streaks, choroideremia, gyrate atrophy dreaded complication.
Nitrocellulose lacquer i told him how oxnard wasnt producing guitars yet with nitro, and that we had heard about problems and challenges theyre experiencing. 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. Angioid streaks are bilateral, narrow, irregular lines deep to the retina configured in a radiating fashion emanating from the optic disc, which result from breaks in a weakened bruchs membrane. Mohawk finishing products m1030540 mohawk lacquer for brass satin, clear. Regarding its content, nitrocellulose lacquer is mostly solventbased and. Heavily rusted surfaces should be abrasively blast cleaned. Here it is, the tutorial on how to make nitrocellulose lacqure. Behlen stringed instrument lacquer is a high quality nitrocellulose lacquer specifically designed for wooden stringed instruments. Lacquer cracks are considered to represent mechanical fissures in the retinal pigment epitheliumbruchs membranechoriocapillaris complex secondary to eyeball elongation in highly myopic eyes. Apart from the above, small cracks can appear in a nitro finish after.
The progression of lacquer cracks in pathologic myopia. Mohawk finishing products m1020541 mohawk finishers. I was in a store recently that sold sculpture and mold making supplies and they had quarts of nitrocellulose lacquer. Lacquer cracks are found in the posterior fundus of 4. 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. 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. Making your own nitrocellulose lacquer can be done using cotton and treating it with sulfuric and nitric acid. Mohawk finishing products m1020451 finishers choice clear nitrocellulose lacquer flat. A short tutorial showing how to get that cracking checking effect on a nitrocellulose guitar finish. Im not saying nitrocellulose lacquer finishes arent good finishes, and arent good for a guitars tone, but they dont allow the wood to breathe. I usually dont recommend trying to fix such checks, because they are often an inevitable part of the nitrocellulose lacquer aging process. Nitrocellulose lacquer is also very toxic and can be flammable if not handled properly. This is an extremely common, somewhat expected condition on older instruments with lacquer finishes. How much unthinned celly lacquer approx is needed for spraying one electric guitar.
The eyes of men have a 2fold incidence of lacquer cracks as compared with those of women. 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. Nitrocellulose lacquer, often referred to as nitro or cellulose lacquer, is a classic finish used on cars, instruments and furniture up to 1970s. Stringed instrument lacquer allows for the typical expansion and contraction that can occur due to the unique construction of stringed musical instruments. I realize that many here use behlen nitrocellulose stringed instrument lacquer for their finishes. There is no irregularity or distortion of the neurosensory retina or retinal vessels overlying the lacquer cracks. Lacquer crack means that there is break in bruchs membrane it is a significant finding as you are at risk of getting cnvm choroidal neovascular membranes, which means new blood vessels will start forming. 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.
They represent healed and mechanical breaks of the retinal pigment. Nitrocellulose lacquer is made by taking cotton and treating it with. The lownitrogen form of nitrocellulose is soluble in. Ophthalmologists should be aware that there are numerous systemic diseases associated with angioid streaks, the most common being pseudoxanthoma elasticum. Emerson, md, phd retina center of minnesota coauthors. Spontaneous lacquer crack lesions in the retinopathy. Looking for sources of nitrocellulose lacquer paint. Behlen stringed instrument lacquer can instructions. Nitrocellulose is an explosive compound produced by the reaction of cellulose and nitric acid, or other strong nitrating agent. A lacquer or paint finish on an acoustic instrument is designed to protect the wood from dirty fingermarks, grease, tomato sauce spills etc. Theres a product called blush remover that might work the same way.
Nitrocellulose lacquer thats closest to the old stuff. Safety data sheet sds aa857b acrylic nitrocellulose lacquer thinner 1. Commercial performance coatings nitrocellulose lacquer is a single pack, fast drying general purpose lacquer. Lacquer cracks, myopic crescent, ppa, fuchs spot, cnv, lattice degeneration, retinal detachment and tears ddx. That said, nitrocellulose lacquer will check spontaneously if it is applied too thickly. Patchy atrophy and lacquer cracks predispose to the. Forming a very thin layer it allows the wood to resonate freely with little restraint. Clear nitrocellulose lacquer 400g aerosol spray can. Lacquer finish implies a surface finish that creates a fine smooth wood layer on furniture to improve its functional characteristics. My wife has a 1950 singer sewing machine the machine is dang near perfect, the cabinet not so much. Its hard to say as there are so many variables such as finish thickness and how good your technique is. Nitrocellulose can appear as a pulpy, cottonlike solid when dry. 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. Other, more modern finishes are catalyzed polymers and as they cure, they undergo chemical changes that make them insoluble in anything.
Longterm natural outcomes of simple hemorrhage associated. A wide variety of nitrocellulose thinner options are available to you, there are 82 suppliers who sells nitrocellulose thinner on, mainly located in asia. The main ingredient in lacquer paint is nitrocellulose lacquer that assists in dissolving lacquer coat. Looking for sources of nitrocellulose lacquer paint is. Lacquer cracks in pathologic myopia retina image bank. It is normally applied as lacquer spray paint with polish to improve the furniture appearance and durability. I would search for other names of nitrocellulose lacquer, there is a link below.
Nitrocellulose lacquer is a material which has many uses both inside and outside the home. The top countries of suppliers are india, china, and india, from which the percentage of nitrocellulose thinner supply is. I bought a couple but am wondering if it will work as well for instruments. Nitrocellulose lacquer has been used on guitars since the fifties and sixties because of its excellent characteristics. We recommend using one of our glue bottles or applicators with this product. Nitrocellulose lacquer expands and contracts as well when these changes occur, but it can expand and contract at different rates than does wood.
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