Lacquer cracks observed in peripheral fundus of eyes with high myopia. I got it today, ordered it and its a secondhand 2014 model. The classic lacquer is glossy and much thicker than the road worn. So i have this problem with a couple of lacquer cracks on the body. There were 67 chinese subjects from shanghai included for our study, both eyes of the patients were examined, and we excluded 19 eyes with the following conditions. 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. Once the strings were off, it was obvious that it was a lot more than the lacquer. Lacquer cracks have only been observed in the posterior pole of highly myopic eyes. Lacquer over the poly is the best of both worlds in a way. Wet sandingcracked lacquer inlays and finishing chat. One of the most disappointing of those is the tendency to check or crack with a sudden drop in temperature.
Look for lacquer cracks in high myopes for early warning. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease. Fixing crack in the lacquer the steel guitar forum. Answered by a verified doctor we use cookies to give you the best possible experience on our website. Lets say you had a severe scratch where it went down to the brass, if you scrapped it all down it would still be hard to notice. Conversely, lacquer cracks are found in more than 80.
Contamination found on the substrate oil, water, grease, wax, etc. The eyes of men have a 2fold incidence of lacquer cracks as compared with those of women. Nine eyes of five patients had grade 2 in volvement with lacquer cracks fig. There is one small lacquer crack along the treble side of the truss rod, but its. Spontaneous lacquer crack lesions in the retinopathy. My challenge was to give current cabinets 40 years worth of aged yellowing, but i didnt want to add color to nitrocellulous laquer, just to have the laquer then age even more to unrealistic tint. Lacquer cracks representing ruptures in bruchs membrane occur in 4. The squier cvs i have, have the tighest pockets i have come across.
For this reason, the lacquer used to fill a chip or crack can continue shrinking weeks after a nearly invisible repair. What kind of finish do you use on your instruments. Lacquer cracks are breaks seen in the peripheral fundus of the eyes of people with high myopia. Ideally, the new lacquer should wick its way into and along the crack from the chip. I used a glue syringe from stewartmacdonald and titebond iii cleans up with water and clamped it for several hours. They represent healed and mechanical breaks of the retinal pigment. Apply this paste into the cracks and gently smooth it down. 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.
How to repair cracks in your acoustic guitar guitar alliance. You cannot do any thing to prevent it but eye specialist may do further investigation like fluorescein angiography or ocular coherence tomography oct and may. 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. Hi all i have an american vintage 62 reissue strat. 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.
In six patients lacquer cracks were present in only one eye. A body crack in a solidbody electric guitar is not a common problem. Checking will vary according to the extremes the instrument has been through. Ive read some information saying that this is quite normal in guitar with a bolton type of necks. Retinal physician easily misdiagnosed retinal entities. Lacquer is very high in solvents and as a result it shrinks quite a bit. Since the volute is cracked as well as the flexing parts of the soundboard i can only surmise that it was thermal shock or chemical. Lacquer crack appearance a term of art referring to a pattern in the optic fundus characterised by branching clefts in the lamina vitrea and ruptures of bruchs membrane with choroidal atrophy, which is seen in progressive degenerative myopia.
There is one reason for the appearance of fish eyes. Lacquer cracks observed in peripheral fundus of eyes with high myopia mitsuki suga, kosei shinohara, kyoko ohnomatsui department of. How to repair cracks in your acoustic guitar if you own an acoustic guitar long enough, chances are good that youll have to deal with the repair of a crack in the wood. In all the strats i have had the only one that had cracked paint in the pocket was an 04 mim classic 50s. American, korean and chinese made fender guitars are finished with polyurethane. The progression of lacquer cracks in pathologic myopia. This will fill the gaps but it will always be slightly visible. Lacquer will melt lacquer, so when it dries, although it wont look perfect, itll weld the crack together. Full text lacquer cracks observed in peripheral fundus of eyes with. The occurrence or extension of a lacquer crack can be associated with a macular hemorrhage that may occur in the absence of subretinal neovascularization. I add a doublerpatch panel underneath to spread out the stressesredistribute the loads, more cracking in the future is a lot less likely.
The people who want a finish that will naturally age get just that, but it is still sealed underneath with a finish that wont crack with swings in temperature and allows this to be a production guitar versus solely hand finished since the poly sealer streamlines the prep. A closer look shows the effects of years of string tension and whammy bar divebombs at this vulnerable part of the guitar. Fender would then spray over the coats with nitrocellulous laquer, which is a tougher protective coat than shellac, and presto laquered tweed. Emerson, md, phd retina center of minnesota coauthors.
Lacquer cracks are found in the posterior fundus of 4. As an instruments wood expands and contracts with moisture content stress is placed on the finish. This report describes comparable lesions in the retinopathy, globe enlarged rge chick. Diagnosis and treatment of cnv in myopic macular degeneration. Under close inspection with a bright light, you can still see a hint of the cracks because the lacquer did not seep all the way down into the crack this could have been remedied by first widening the cracks with a knife but it is good enough that it will never be noticed by anyone but me and that is only because i know they arew there. Knowing how to evaluate the seriousness of a crack will allow you to determine whether to call a repair person immediately or whether it might be ok to leave it alone for a. My 4 year old and 1 year old claim that laquer does not affect guitar tone, fender claims otherwise. Most people with lattice degeneration do not need treatment. As the eye stretches it can cause breaks to appear on the retina, which your. Clinical guide to degenerative myopia optometry students. Contamination that occurs during the application andor prep process is the other common. It is important as primary eye care providers to be cognizant of the.
Fender classic series 60s stratocaster lacquer 3 tone. This is an extremely common, somewhat expected condition on older instruments with lacquer finishes. Choroidal ruptures, similar distribution, color, and fluoresceinangiographic appearance to lc, but are caused by a traumaticevent. How to stop a lacquer crack from spreading on a guitar. Also note the classic lacquer seems to have the same neck as a road worn but the finish is much. Lacquer cracks definition of lacquer cracks by medical. I havent used the premixed stuff before, but i used the premixed lacquer paint in. To investigate the relationship between simple hemorrhage sh associated with lacquer crack. If youre lucky ive been lucky often with this and choose the. The content on this site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. I have a classic lacquer jazz bass and a road worn precision. These lacquer colors were created to try and match the vintage custom colors used by fender in the 50s and 60s.
Lacquer cracks were detected more frequently in the temporal 44. Vigorous eye rubbing has also been advocated as a possible predisposing factor to lacquer crack formation. The headst0ck angle pitch is als0 1 reas0n why they have such nice sustain. The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists. Lacquer cracks in pathologic myopia retina image bank. Lacquer cracks observed in peripheral fundus of eyes with high. Was returned by a very angry customer who stated that the shipping container had no physical damage. I usually dont recommend trying to fix such checks, because they are often an inevitable part of the nitrocellulose lacquer aging process. Pathologic myopia ohnomatsui annals of eye science. Choose a lacquer repair kit which contains the substances that you can use to fill the cracks in the lacquer. But the fact is the fender cracked at one specific point for a reason. Mexican and japanesemade fender instrument bodies are finished with polyester while the necks are finished with polyurethane.
Lacquer crack appearance definition of lacquer crack. I repaired what looked like a lacquer crack on an epi les paul neck last night. Longterm natural outcomes of simple hemorrhage associated. Lacquer cracks are present in high myopia and can lead to choroidal neovascularisation and macular haemorrhage, which in turn can cause central visual loss but it is not very common. It can be resurfaced and buffed over real nicely too. Fish eyes typically but not always appear in a paint surface soon after application. Mitsuki suga, kosei shinohara, and kyoko ohnomatsui. Fundus changes at the initial examination were diffuse atrophy in 243 of 325 eyes 74. Nitrocellulose lacquer does have some nasty habits. To repair this, ill cut away the damaged alder and patch in.
Need to remove some lacquer from a guitar or some furniture. Lacquer crack lesions in pathologic myopia sciencedirect. Ten eyes showed circumpapillary extension of the crescent. Fender still uses nitrocellulose lacquer finishes on a select group of instruments road worn and american vintage series, various artist models. The thin, watery superglue will fill cracks in lacquer pretty well. Treatment for lacquer thinner splashed in eyes, after. The classic series 60s stratocaster lacquer evokes that golden chapter in fender history with an authentic nitrocellulose lacquer finish on its sleek alder body.
Removing scratches from guitar finishes lacquer repair. Variants in use include satin nitrocellulose lacquer highway one models, jim root stratocaster, which is a flatter finish, and thinskin nitrocellulose lacquer vintage hot rod models, which. Lacquer cracks are seen in almost 5% of highly myopic eyes, and the reported incidence of cnvm associated with these lesions is as high as 10%. Lacquer crack lesion lcl, a complication of myopia in human patients, is characterized by loss of retinal pigment epithelium and breaks in bruchs membrane. Gibson les paul 1957 goldtop cme gear demo youtube. Realize that i am being quite picky to say that i can see the repaired area but i try and educate my customers to the nature of lacquer so they know what. Each eye with lacquer cracks had tem poral crescent formation at the optic disk. This mandolin left my shop perfect in every way, was dedamped and actually played a number of times. The fender is bare metal, the tank is old lacquer on the bottom, and bare metal with a small amount of filler, and the front air dam is plastic. In highly myopic eyes subretinal hemorrhages and lacquer cracks are often found simultaneously. Dont forget that acetone nail polish remover is your best remedy for getting your fingers unstuck with crazyglue. If you glue your eyelids shut, id go easy on the acetone and maybe seek pro help. Lacquer cracks are fine, irregular, yellow lines, often branching and crisscrossing, seen in the posterior fundus of highly myopic eyes figure 1.