Acrylic lacquer cracks vs angioid

Two 60s lake placid blue jazzmasters but the left guitar has a nitro top coat, which has yellowed over time. Lacquer vs paint lacquer is a word that is used both for the product as well as the finish that is provided by it to the surface over which it is applied. Description high myopia is defined as myopia greater than 6 diopters and an axial length of 26. Learn when each type of acrylic paint should be used. Lacquer cracks vs angioid streak vs choroidal rupture all three diseased statesof bruchs membrane angioid streaks emanate radially from disc, are straighter,and are reddish in color. Both heat the finish much more than the final sanding rubout, because the grits used are much finer and produce more friction when worked. Angioid streaks are orange, red, grey or brown in color and can be confused for retinal blood vessels on superficial examination. Angioid streaks are bilateral, narrow, irregular lines deep to the retina configured. 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.

Patchy atrophy and lacquer cracks predispose to the. Sand down the primer so it is even using 320 grit sandpaper. 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, rich in. Nitro is incredibly easy to finish with and is easy to repair. Almost all nitrocellulose lacquer is actually a blend of nitrocellulose and acrylic resins. You can put lacquer thinner in enamel, but you cant use enamel thinner reducer in lacquer. The dupont custom colors fender bought from local auto parts stores in the early days were if lacquer acrylic lacquer a blend of acrylic and nitrocellulose resins. You can prime the plastic but be careful which primer you use. Dont get me wrong it is better than al in a lot of. This nitrocellulose lacquer gives a bright pop of color to any rescued piece and offers a. The advantage of acrylic lacquer is its exceptionally fast drying time. Do not be tempted to mix acrylic clear lacquer or paints with any other cellulose paint or basecoat it will either curdle immediately on mixing, or crack in. Nor are the finishing standards or production goals identical from facility to facility or shop to shop. Deciding factors are based in part on user friendliness, dry time, durability.

Spray the paint over the surface in the same even strokes as the primer. Apr 15, 1987 myopic cracks, angioid streaks, and traumatic tears in bruchs membrane. What are the pros and cons of using acrylic lacquer vs. We studied the pattern of break formation in 60 eyes with myopic lacquer cracks, angioid streaks, or traumatic tears in bruchs membrane, using a graphics composition technique and computer analysis of digitized images. The streaks run a convoluted course and tend to terminate abruptly. Al acrylic lacquer single stage colors can be polished to a full gloss.

Otherwise, the working properties are much the same. Auto general purpose paints acrylic lacquer product page. Lacquer and resin finishes tested on acrylic poured coasters. But, where lacquers harden simply through the evaporation of their liquid solvens into the air. Angioid streaks demonstrating irregular concentric and some fine radial streaks associated with interconnected circular breaks near. Lacquer vs acrylic lacquer vs poly no chops but great tone. Enamel vs acrylic vs lacquer finescale modeler essential. And that cracks across the grain were in the lacquer. There are many kinds of acrylic lacquers, but the most commonly one is the cab acrylic lacquer. A thin acrylic lacquer finish will be basically indistinguishable from nitro, except that it wont yellow and crack over time. Im back to test a couple more potential finishes you can use on your acrylic poured tiles, if you want to use them as functional coasters. Use a lacquer primer that will work with your paint and apply it in even strokes across the surface.

Acrylic lacquer acr100 cpcpb701 physical constants. I was wondering if there is a good acrylic lacquer you prefer andor is there a less toxic waterbased acrylic lacquer available that will get us the results we want. Firstly the old holdens were painted in nc nitro cellulose lacquer a type of acrylic this was a good paint but had very limited life due to its bad uv properties it was pretty high maintenance requiring a good level of polishing which of course just wore it away some of these factory nc jobs still exist on the old girls today and owners are not game to touch. It seems like acrylic lacquers might be the right choice because they dont yellow with age. As for the types of lacquer, see if you can find some cab acrylic lacquer for a nonyellowing alternative.

Acrylic lacquer dries to a less brittle and more flexible film than that of nitrocellulose lacquer. According to chemical resistance of plexiglass acrylic alcohol is not as aggressive as you mention with plexiglass acrylic. Right now it is dtl 876 at my house, nother couple degrees and will be dtl105. Catalyzed lacquers further shifted the definition of lacquer. There are many kinds of acrylic lacquers, but the most commonly one is the cabacrylic lacquer. They usually go on clear and remain like that over time. Advantages and disadvantages of lacquer in woodworking. How much more durable is basecoat clearcoat paint which is a urethane compared to the acrylic lacquer paints.

Lacquer cracks must be differentiated from 2 similar diseases of bruch membrane, namely angioid streaks and choroidal ruptures. Enamel paints usually dries to a hard, glossy finish, it takes around 23 hours to dry, with a 2448 hour curing time. Ready to spray acrylic lacquer clearcoat automotivetouchup. To satisfy a wide range of variables relating to application, curing, finish durability, appearance, environmental requirements, green sustainability initiatives, and cost, i have been. Choroidal ruptures, on the other hand, share with lacquer cracks. Sep 03, 2004 havent shot lacquer in about 15 yrs, back then there were different lacquer thinners reducers for different temperature, also could add retarder make it dry slower, more gloss. Apr 22, 2009 acrylic lacquer is often used as a protective topcoat over colored pigment lacquers to make them wear better and to enhance their resistance to scratches. Acrylic lacquer thinner an excellent thinner designed to dilute lacquer based paints, primers and clears. Whats the difference between polyurethane, varnish. Thus, an acrylic lacquer is an acrylic polymer combined with a solid resin that is soluble in the same solvent or a compatible cosolvent as the polymer. It bonds well and although lacquer isnt as flexible as acrylic fortified latex, it doesnt crack except under extreme fluctuations in temperature or humidity. Lacquer can be touched after 30 minutes, acrylic after a couple of hours, enamel for eight hours or more. Dries quickly on application,and so is less susceptible to dust. The differences between lacquer and polyurethane learn.

Lacquer over lacquer primer would have the thinner soaking all the way to the metal and it takes a long time for it to evaporate and the paint film to get dry and firm. Acrylic is also used in enamel paints, which have the advantage of not needing to be buffed to obtain a shine. Other associated findings in patients with angioid streaks may include peau dorange or leopardskin spotting, consisting of speckled yellowish mottling of the posterior pole mostly apparent in the temporal macula. This is not necessarily a top quality acrylic thinner but is reasonably priced. Does anyone know of a source for a sealer that is compatible for use over traditional lacquer primer or any lacquer substrate and compatible with a top coat of acrylic lacquer. Clinically, they appear as fine, irregular yellow lines, single or multiple, linear or stellate, often branching and crisscrossing at the posterior pole, usually within an area of staphyloma. Nitro lacquer discussion in the small company luthiers started by ducryder, jul 22, 2009. This leaves me with the dilemma of picking what to replace it with. If the paint doesnt come in a aerosol can, connect it to a. Al series acrylic lacquer can also be clear coated with cl3245 high performance lacquer clear to add additional color depth extra protection for a show quality finish. Oct 17, 2011 automotiive lacquer is a bit too strong on bare plastic. Al is an easy 11 mixing system, 1 parts al color to 1 part lt series lacquer reducers. Robert vivacqua investments toronto, ontario, canada. Actual values could vary slightly due to manufacturing variability.

Furthermore, the hard film that it makes rubs out well. Improving differential diagnosis of angioid streaks retinal physician. Choroidal ruptures, similar distribution, color, and fluoresceinangiographic appearance to lc, but are caused by a traumaticevent. Lacquer itself comes from the shell of the lacquer beetle lacquer spelled a different way,thats why it looks more natural similar to your fingernail one is acyilic,and the other is nitrocellulose,which is nitratei think like the old nitrate pick guards green guard mixed with cellulose,same as celluloid movie film. All values are theoretical, depend on color and are readytospray. Angioid streaks knapp streaks statpearls ncbi bookshelf. Lacquer cracks are mechanical fissures in the retinal pigment. There are various solvents, each with different properties and uses.

Acrylic lacquer, on the other hand, was made to solve these yellowing problems. I was always under the impression that top wood always cracked along the glue line or along the yearly grain line. Now that you have a clean and scratch free finish you can concentrate on filling the cracks. Ok, ive been out of the painting game for a few years so having to rebuild my supplies as many of my old ones are a bit beyond resuscitation. The ravages of time and use of a piece of furniture can be limited by a durable top or finish coat. Lacquer cracks are considered to represent mechanical fissures in the retinal pigment epitheliumbruchs membranechoriocapillaris complex secondary to eyeball elongation in highly myopic eyes. Now im kinda afraid to shoot lacquer over enamel epoxy at all. I painted my truck allmost 1 year ago and i used acrylic enamel paint and clear coat well the paint is perfect nice and shinny but i have some minor orange peel and dust in the clear coat. In use, the term acrylic lacquer is similar to the term enamel lacquer.

Waterbased acrylic lacquers finishing wood talk online. A catalyzed lacquer is a coating that dries by evaporation, acting very much like a straight lacquer defined above with no chemical curing or crosslinking and then cures by the reaction initiated by the catalyst. For this reason, we recommend the acrylic lacquer paints for garage kept vehicles that see limited use. Cracks are very thin, about 12 in length in random directions. After buffing i get cracks that appear in the color coat and seem to penetrate into the primer. Lacquer finishes come in several general types, each with its own set of advantages and disadvantages. Instead, the lacquer remains on the paint as a surface coating. Jun 01, 2007 lacquer cracks are clinically noted in 4. It bonds well and although lacquer isnt as flexible as acrylicfortified latex, it doesnt crack except under extreme fluctuations in temperature or humidity. The most widely used acrylic lacquer is cabacrylic.

Choose a lacquer repair kit which contains the substances that you can use to fill the cracks in the lacquer. 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. Due to the fact that enamel paint dries harder, so its more resistant to scratches which can be vital when posing a kit. Lacquer is mostly used to have a protective and glossy coating over wooden and other metallic surfaces and is usually clear or tinted. Silver metallic lacquer over 1 epoxy primer, 2 feather fill and 3 regular lacquer primer. Acrylic paints and lacquer thinner finescale modeler.

There are several types of acrylic car paint that can be used on a car including acrylic enamel, acrylic lacquer and acrylic urethane. Both are shorthand for a polymer combined with a true lacquer resin natural or synthetic. Peripheral lacquer cracks as an early finding in pathological. Apply this paste into the cracks and gently smooth it down. Lacquers cracks a degenerative finding noted in pathological. Acrylic lacquer was made to avoid yellowing problems that other kinds of finishes often left. This thinner does not contain any reclaimed solvents and is compatible with most major paint systems. In my experiece lacquer is best sprayed, its a lot of work to get a brushed finish levelled any looking like it was sprayed.

Protects the basecoat color from uv rays, weather, and abrasion. So by the time you have 34 coats applied, you can switch to regular clear gloss lacquer and begin layering as thick as you want. What is the difference between acrylic enamel and acrylic. The term lacquer is used for a number of hard and potentially shiny finishes applied to materials such as wood. There will be times in your build where you will be needing to use all 3 paint types to get the best results. Acrylic lacquer auto paints also will not have the durability of acrylic enamels or urethane auto paints. He made beautiful finishes with both types of lacquer paint. Factors such as the strength of the solvent, intended use, speed of evaporation and material to be used on should be considered before choosing a solvent. Spray gun and compressor are required to use this product. It is used on guitar bodies and other musical instruments among other items. Acrylic lacquer is a premium automotive formulation designed to give a lustrous durable finish. Angioid streaks were first reported in 1889 by doyne and the term angioid streaks. Cabacrylic lacquer dries to a less brittle and more flexible film than that of nitrocellulose lacquer.

While the terms varnish, polyurethane, lacquer and shellac are commonly used to reference a final finish in general, these products are not the same, nor are they recommended to be used interchangeably. I find that builds up a gorgeous finish with color in each coat. I have been reporting on the acrylic lacquer for the last few years yet few of the diehard finishers have taken up the new technology, for better or worse in our industry getting up and running with a new product, waterbased materials or other wise is a trying activity experimenting with you customers kitchens is a risky business and with economic. Angioid streaks are located deep to the retinal vessels and originate. The resin goes brown and cracks making the whole finish breakdown in less than 6 months in our climate. Lacquer thinner for acrylic paint posted by kylebragger on sunday, december 10, 2017 7.

Acrylic latex paint is an acrylic finish, but it wont soften when you spray lacquer on it. Improving differential diagnosis of angioid streaks. When all he could find was acrylic lacquer he began using it. Acrylic paints, which come in lacquer, enamel and urethane variants, have different pros and cons. Lacquer cracks definition of lacquer cracks by medical. The differences between enamel and lacquer learn how to. Choosing the proper lacquer depends on your experience with applying lacquer, the piece being lacquered, and the look thats just right for your project. Aug 19, 2011 acrylic lacquer thinner should contain at least 2 percent nhexane, 50 percent toluol, 15 percent methanol, 5 percent acetone. The differences between lacquer and polyurethane learn how. Acrylic resin is colourless, transparent thermoplastic, obtained by the polymerization of derivatives of acrylic acid. Our formula dries quickly, has superior adhesion to metal, and dries to a high gloss sheen.

The gloss and durability is better with lacquer over 2k primer. These breaks are usually linear and hence named angioid or like blood. Angioid streaks usually do not extend past the equator. This photo seems to show a serious crack in the wood across the grain. This will fill the gaps but it will always be slightly visible. Lacquer paint quality and durability for autos 2004. Patients with history of hypertension or diabetes, confounding ocular disease, additional eye operations, including vitreoretinal or cataract surgery or refractive surgeries, and other myopic complications including lacquer cracks, posterior staphyloma, choroidal atrophy, choroidal neovascularization, subretinal hemorrhage, macular traction, macular hole, retinal detachment, and retinoschisis. Its supposed to be mild but try it first to be safe. Im repainting sections of my 32 chevy with some old leftover duponts acrylic lacquer and. Acrylic is great if you dont mind the wait, but regular lacquers faster drying time and selfcorrecting ability justifies the inconvenience of outdoor finishing work. But, we have to signal that acrylics is a big family of polymers thermoplastics or thermosets derived from acrylic acid, methacrylic acid or other related compounds.

Angioid streaks result from cracklike breaks in bruchs membrane, which is abnormal in its structural composition, predisposing to these localized areas of rupture. While one may be stronger, another may be weaker, due to the variations. Precat lacquers become the new standard woodshop news. Apr 22, 2009 ci centurion acrylic lacquer in action. If properly cut and polished, appearance is unbeatable. The most widely used of these products is called cabacrylic lacquer, made with cellulose acetate butyrate and acrylic resins. Angioid streaks represent a rare ophthalmic condition that has very specific ophthalmoscopic features but is caused by different etiologies. I know ron kirn and others love nitrocellulose lacquer. Ok, im no expert on paint but hopefully somebody who is will come along and elaborate further, but my understanding is the terms acrylic, enamel and lacquer refer to the carrier medium used within the paint and, consequently, affects how to clean up after use. Lacquer, varnish, polyurethane, shellac and natural oilstain are all top contenders as choices for wood finishing. About 3 hours ago i sprayed a guitar with epoxy and i thought it would be dry enough to spray clear coat lacquer over it safely. You will need a finish that is both water and heat. Differences between acrylic, enamel and lacquer paint.

It cost twice as much as the nitro and imo didnt spray as well. Polyurethaneacrylic lacquer is one of the toughest lacquers available. Although uncommon, angioid streaks often have a systemic cause and. I know, lacquer is old technology, but only the hood is left to do. Its been used for interior use for a long time after the introduction of acrylic lacquer 1960 as it had been used since the 1920s and a lot of people were used to it. Lacquer cracks can be seen in eyes that are highly myopic and are often. Available in pint, quart and gallon sizes for large repairs or complete resprays. Look for lacquer cracks in high myopes for early warning of. Diy expert amy howard shares all about highperformance furniture lacquer. The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists.

Lacquer at the lathe lacquer really shines at the lathe because the finishing process takes full advantage of lacquers lightningfast drying time. Lacquer cracks consist of ruptures in the retinal pigment epithelium rpebruchs membranechoriocapillaris complex. Lacquer cracks generally occur in the posterior pole of the fundus, and to date, there has been only one case report on lacquer cracks that appeared in the peripheral fundus. However, it may also cause some cracks and it may yellow over time. The term lacquer often is confused and sometimes used synonymously with the term varnish. Acrylic lacquer dries harder than nitro, but still requires about as long a curing period. Aug 03, 2011 hi jim, welcome back to the hobby and to the forum.

I paint my car with a lacquer or am i asking for trouble with having to repaint it again in 1 year or so. Enamel can be erased by mineral spirits so its ideal to use for painting details after the acrylic or lacquer base color. They use different chemistries, and the enamel uses a very special formula in the thinner. How to remove clear polyurethaneacrylic lacquer ehow.

Dad was a hack car painter, but he swore by lacquer. Exclusively formulated for automotivetouchup basecoat colors. Look for lacquer cracks in high myopes for early warning. They are usually acrylic materials, and whilst application is very similar to cellulose paints, it is actually an entirely different material. I bought some white acrylic lacquer from autozone that was intended for automotive use just for experimental purposes. Acrylic lacquer auto paint, is primarily for antique or classic car restorations, where the highest possible gloss and shine is desired. 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. It is extremely hard to sand off by hand or with power sanders. Provides the true color, luster, and gloss that basecoat color alone cannot.

How to choose and apply clear lacquer carsprays diy car. Myopic cracks, angioid streaks, and traumatic tears in bruch. Acrylic lacquer thinner should contain at least 2 percent nhexane, 50 percent toluol, 15 percent methanol, 5 percent acetone. It dries to a clear, almost indestructible plasticlike finish. I still have a ditzler thermometer with the different temp ranges thinner numbers on it. Nov 01, 2011 improving differential diagnosis of angioid streaks diagnostic considerations and a case study. Acrylic lacquer paints have been largely discontinued by most manufacturers. Once dry, it can be machine or hand buffed for an even glossier appearance.

When applied, it goes on clear and stays that way forever. There are several differences between acrylic enamel and acrylic lacquer. Angioid streaks usually emanate from the disc, tend to be straighter, and are reddish in color. Choroidal ruptures, on the other hand, share with lacquer cracks similar distribution, color. Lacquer cracks are often mistaken for angioid streaks. Retinal physician easily misdiagnosed retinal entities. Acrylic resins go on crystalclear and stay that way over time. Enamel paints are more toxic than acrylic paints, but arent as bad as lacquer paints.