Grazie Maestro per la tua disponibilità e l'affetto che hai con noi. Da principiante alla Lugheria, imparo molto dai tuoi video. Mi chiamo Gervásio Martins e vivo in Brasile. Dio vi benedica.
Enhorabuena , es un autentico maestro detallista . La linossina que encuentro en el mercado es clarita , como hace la oscura que utiliza usted . Muchas gracias.
E' una questione di invecchiamento e ossidazione naturale, la mia linossina è molto vecchia, più di 30 anni. Credo che almeno 10 anni siano necessari per ottenere un colore scuro
Thanks! But to be fair I must tell you that what you see in this video is only the base varnish in the first coats of the application, which will then be followed by other coats of varnish with added colored pigments (mostly red lakes from Madder and Cochineal). The final color can be made lighter or more intense based on the number of colored coats and the amount and type of pigments added. This yellow hue could of course also be left as is, but not many people seem to like this golden yellow color, a red color is more traditionally regarded as the typical color of violins. You can see an example of the color of a finished violin of mine here: ruclips.net/video/3zBs7qRq0cc/видео.html or in the videos of this playlist: ruclips.net/p/PLaxadm6POX7GQTPVDo5tDrHPHL--5hg5q
Buenos dias , me encanta como trabaja . Veo que usa alcohol de 96° para hacer el barniz de goma laca , lleva un 4° de agua , yo uso alcohol 100% , que le parece . Gracias.
Thank you! As for your question, 100% alcohol can only exist in laboratory conditions or when the package is sealed. As soon as you open it, it will absorb moisture and stabilize at a percentage probably close to 95/96%. The recommendation to use food-grade alcohol (Everclear) is because it does not contain additives and I think it alters the resins less over time, but it is expensive due to state taxes. Food-grade alcohol is 96% here in Italy. All other alcohols have low percentages of additives that make them unusable for food use, so they cost less due to the lower taxes applied. In any case, any alcohol that can dissolve shellac well will be fine for making varnish, if you are happy with the one you use that's fine, but I do not think that a higher percentage (100%) has any advantage toward 95/96%
It is the boiling point of the varnish (just the seedlac at this point), which is an alcoholic solvent and so is determined by the boiling point of ethyl alcohol, i.e. 78°C. Actually, the varnish will boil at around 80°C, due to the presence of resins in the alcohol which raises the boiling point a little. It wouldn't be strictly necessary to use a thermometer, just bring it to a gentle boil (no overboiling, please), but the glass rod of the thermometer is very convenient for stirring and preventing it from boiling too vigorously. You need to adjust the hotplate so that it comes to a boil slowly and in a very controlled manner.
Maestro, thank you for answering my previous question on a different video. In this video I noticed the beautiful 2 piece Amati style back. Kindly tell me how you joined this type of back. I mean, when joining it, did you book match it and then flip one side to get this effect? Or was something else done to make the flames slant in the same direction? Thank You
I did as in your first hypothesis, book-matched and with one half flipped lengthwise. It can be done with the wood of any book-matched back, there are no particular precautions to obtain this effect. But not all flame patterns match well this way, they have to give the idea of flowing as if in one piece back
Davide could the replacement of the evaporated alcohol be calculated by weight. So weighing before boiling then replacing alcohol to achieve the original weight. Also the 7 grams of Linoxin would replacing it directly with 7grams of Elemi work? Thank you for explaining your varnish making method, also best wishes for the new year.🎉
Yes, alcohol loss can be more accurately calculated by weight. Calculating it by volume is more practical, but it's essentially the same thing, you don't need extreme accuracy. Regarding Elemi, I haven't done accurate tests, but using more or less the same quantities as Linoxin should be fine. The only way, and this also applies to linoxin, which changes its elastic properties depending on aging, is to rely on one's own results in the finished violins: if the varnish gives us the sensation of being too soft or too hard, we will have to decrease or increase the ratio between soft and hard resins used. It's trivial, but when you're dealing with intrinsically variable natural materials, that's how it works. This is also why it's best to keep things simple (few paint components) so you can figure out which one is responsible if there's a problem. If you use many different resins and solvents as in some 19th and 20th century varnishes you won't be able to understand much, a real nightmare if you need to refine the properties of your varnish.😉
Thank you David for demonstrating the making of this varnish, it’s very generous of you to share this with us thank you again. Would I be correct in saying that this varnish will be vastly superior to the 1704 varnish?
1704 is a good varnish that works, I also used it in the first years of my activity, but it has the disadvantage of containing the waxy parts of shellac and elemi as an elasticizing element, which are less transparent and more plastic than really elastic. In this sense, very old Linoxin is much better as it always remains elastic and also contributes to the golden yellow color significantly, while shellac and elemi tend towards a lighter and less interesting yellow. Acoustically it is more difficult to establish neat differences, but due to the aforementioned characteristic, I believe that Linoxin is also superior in this aspect.
Hi Berl, what you see in the video is the application of the third coat of "colorless" (without pigments) varnish. Linoxin contributes a lot to the beauty of this nice yellow shade, but of course the underlying wood is not white and has been tanned about a week in the UV box and by the application of the casein which, due to its basic pH, darkens the wood by further oxidation.
The white part that covers the neck is a simple sheet of paper, the one that protects the gluing surface of the fingerboard is made of wood (in this case Olive tree wood) but it can also be made with plywood, as you can see in this video: ruclips.net/video/AuQF1ROwZC0/видео.html
Dear Davide, thank you so much for sharing your precious knowledge with us. I have some questions about varnish: is it necessary to add alcohol to the varnish as we use it in order to maintain the same viscosity? I varnished a violin with spirit varnish, about a month ago, it dried out but it didn't harden enough. Is there any possibility that it will harden over time? Maybe the uv light would help? I used shellac, mastic and sandarac. I really appreciate your work (near perfection) and your generosity. Thank you very much! Ciao!
Yes, it is necessary to replenish the alcohol that evaporates while we keep the jar open during the application of each coat of varnish. This is done by eye, evaluating the viscosity of the varnish while gently shaking the jar. After a month the varnish should be reasonably hardened, certainly not so soft that it takes the imprint of the case or to slide off under the pressure of the bridge feet. If your varnish is composed only of alcohol, shellac, sandarac, and mastic and freshly made it should be quite hard and though. If it remains soft, the causes could be different, for example if you have added essences such as lavender oil or other essential oils, which never evaporate completely, or if it has been dissolved in alcohol for a long time, in this case it will never harden properly due to the esterification process of shellac in contact with alcohol. Another cause could be that you have applied too many coats a day and have not given time to dry each coat well, so the alcohol gets trapped in the layers and keeps the varnish soft. However in this case it will harden properly over time, but it may take several months or years, depending on the thickness of the varnish layer. UV lamps cannot do anything because there is nothing to polymerize as is the case for oil varnishes.
An alternative resin is elemi, obviously not the same, but it can work reasonably well. The color will be lighter because elemi is practically colorless while oxidized linoxin has a brownish-red color which gives the varnish pleasant amber reflections, warming up the final colour.
Buonasera. Per evitare che il legno assorba troppa vernice, non dovrebbe esserci un turapori? Cosa mi consiglia di fare in base alla sua esperienza? Grazie
Io applico prima un impregnante proteico alla caseina, e poi un turapori fatto con mastice, trementina e pomice. Lo puoi vedere in questi video: Caseina: ruclips.net/video/lexxKWBHx-I/видео.html Mastice e trementina: ruclips.net/video/3kjqcnjZ8_4/видео.html
I don't know the exact name, which usually indicates origin rather than quality. Anyway, I have these: www.kremer-pigmente.com/en/shop/mediums-binders-glues/60490-seed-lac.html www.kremer-pigmente.com/en/shop/mediums-binders-glues/60430-stick-lac.html Both are fine, the stick lac I have has a color with more orange-brown nuances, and the seedlac is more golden yellow. Both are the same type of resin, i.e. shellac
What you see in the video is the application of the third coat of varnish, the golden yellow color is therefore mainly given by the two previous coats of varnish. Of course, the underlying wood is not white, but has been colored by about a week of exposure in the UV box and then by the application of the casein solution which, due to its basic pH, darkens the wood by further oxidation. I would like to point out that this oxidation coloring (UV and casein) has very low penetration and affects only the surface layers of the wood (less than about a tenth of a millimeter of penetration) and does not affect the underlying layers in any way, so it is important not to carry out sanding or finishing of any kind before applying the varnish, otherwise it would be very easy to get an uneven and blotchy result.
@@DavideSora so maestro from what I understand, once the plain white wood is fully worked on, you put the white violin in the UV box for one week at least then apply casein sealer, and then simply the build up of linoxyn varnish in layers correct?
@@Aecarvalho007 After the Casein I also apply a solution of Mastic dissolved in turpentine and added with pumice, which acts as a refractive ground and pore filler but does not give a great contribution to the color, it only makes it more lively. If you don't have a UV box or don't have the patience to wait a week to develop the tanning (or even more, the more the better), you can use chemical oxidants such as some form of Nitrite (sodium or potassium), or some equivalent commercial product such as this: www.cremonatools.it/old-wood-1700-italian-golden-ground-1700-a-b-2-x-125-cc.html The color will not be the same, but many luthiers use these systems
Grazie! Puoi usare l'Elemi, non è la stessa cosa ma penso sia la migliore alternativa. Sostanzialmente puoi fare la "vernice 1704" molto usata in liuteria, che oltre all'Elemi conserva anche la cera presente nella gommalacca grezza (seedlac) come ulteriore elemento plastificante. Puoi vederla qui: ruclips.net/video/g0ewnWaxG-U/видео.html
Just to give me an idea of what you mean, do you think the violin you see at the end of this video could match your description of "dark tiger flames"? Or do you mean something more "dramatic"?
@@andrzejtruchan5236 First of all, it is necessary to have deep-flamed wood, you will never be able to obtain a marked effect with poorly flamed wood. My process starts with exposing the white violin (bare wood) for about 250 hours or more to UVA light using the UV box you see in this video: ruclips.net/video/k6A6lklzTNM/видео.html With this treatment, the wood darkens and increases the contrast of the flames through natural oxidation, without risking the uneven coloring that would be obtained with stains that some luthiers use (water or alcohol-based stains), which in addition to the risk of uneven staining can cause blocking flames, which isn't nice at all, Then, the Casein sealer contributes to color and oxidation, and Mastic and Turpentine increase the contrast and brightness of wood figures. Alternatively, chemical oxidants can be used such as sodium or potassium nitrite, or some commercial oxidizing system (such as Oldwood Italian ground A+B, which is mainly sodium nitrite) and the aforementioned water stains used with skill, but for me, natural oxidation through UV is the one that offers the best results and the best control, chemical oxidants and water stains are rather unpredictable because the wood does not always react in the same way, and the risks of irreversible failure are always lurking. Furthermore, the long-term effect of chemical treatments always remains unknown, both aesthetically and acoustically. Basically, it is the whole system starting from the finishing of the wood, and then the treatments and varnishing to determine the final result, it is probably one of the most difficult things to achieve, many attempts and tests on scrap wood are needed
With alcoholic solvent, it is impossible to heat the varnish to apply it, because you would only obtain faster solvent evaporation with serious application problems. What you need to do is warm up the environment where you varnish, if the room temperature is below 19° C you cannot apply varnish successfully. If you cannot heat the room, you must avoid the colder periods, probably the ancients only varnished their violins in the summer or in any case in the hot and sunny periods of the year, reserving the winter only for construction.
@@Thanos-x7e Oil-based varnish can be heated for application, especially if it is very thick and contains little or no solvent. The boiling point of solvents such as turpentine or petroleum is much higher than alcohol so they can handle slight heating. In any case, in cold environments, it is always better not to varnish, even oil varnish will need heat and sun (or UV) to dry properly
@@Thanos-x7e Yes, a bain-marie is a good system, but the paint doesn't need to be heated very much, just assessed by eye that the fluidity has improved and that the varnish can be spread easily. Varnishes are not all the same, so it is impossible to establish an ideal temperature. The best thing remains that the varnish has the correct fluidity at a room temperature between 20° and 30°, without having to heat it.
Ciao Maestro Ottimo video, sto imparandos molto con il tuo modo di lavorare. Potresti darmi gli indirizzi dove acquisti i tuoi prodotti vernicianti. Grazie in anticipo per il vostro aiuto. Cordiali saluti Yannick MELCHIOR
Il negozio che mi sento di consigliare è Kremer: www.kremer-pigmente.com/it/ Trovi un po' tutto quello che serve per le vernici di liuteria, e di ottima qualità.
Non ho un video, ma ho fatto questo articolo che spiega nel dettaglio il procedimento: davidesora.altervista.org/articoli/lannerimento-degli-smussi/ Alla fine dell'articolo trovi anche l'icona per scaricare il Pdf in italiano e anche in inglese
Resins such as Seedlac and Mastic are quite easily found in specialized shops, this is a very well-stocked one: www.kremer-pigmente.com/en/shop/mediums-binders-glues/ Linoxine is the real problem, you can't find it on sale and you have to make it yourself starting from linseed oil, a rather long process. It can be replaced by Elemi, it's not the same thing and the color will be less beautiful, but it can work decently well.
Buongiorno Davide! Come promesso, il mio primo violino costruito grazie ai tuoi video è finito, vorrei portartelo a vedere a Cremona un sabato, e se fossi così gentile vorrei provarne uno tuo! Quando possiamo organizzare? Se mi dai una mail magari ti scrivo in privato, grazie mille
I’m an amateur luthier and i learn so much with your video.
Really thank you
Same
Muchas gracias por la aclaracion.
Grazie mille Maestro! É anche un piacere guardare i suoi videii. Saluti!
Grazie Maestro per la tua disponibilità e l'affetto che hai con noi. Da principiante alla Lugheria, imparo molto dai tuoi video. Mi chiamo Gervásio Martins e vivo in Brasile. Dio vi benedica.
Enhorabuena , es un autentico maestro detallista . La linossina que encuentro en el mercado es clarita , como hace la oscura que utiliza usted . Muchas gracias.
E' una questione di invecchiamento e ossidazione naturale, la mia linossina è molto vecchia, più di 30 anni. Credo che almeno 10 anni siano necessari per ottenere un colore scuro
So pretty! the flames on the ribs and back are really brilliant. I love the choice of a lighter varnish with no antique-ing.
Thanks!
But to be fair I must tell you that what you see in this video is only the base varnish in the first coats of the application, which will then be followed by other coats of varnish with added colored pigments (mostly red lakes from Madder and Cochineal). The final color can be made lighter or more intense based on the number of colored coats and the amount and type of pigments added. This yellow hue could of course also be left as is, but not many people seem to like this golden yellow color, a red color is more traditionally regarded as the typical color of violins. You can see an example of the color of a finished violin of mine here: ruclips.net/video/3zBs7qRq0cc/видео.html
or in the videos of this playlist: ruclips.net/p/PLaxadm6POX7GQTPVDo5tDrHPHL--5hg5q
Complimenti !!! Il video é perfetto. 🎻🎻🎻💯
Buenos dias , me encanta como trabaja . Veo que usa alcohol de 96° para hacer el barniz de goma laca , lleva un 4° de agua , yo uso alcohol 100% , que le parece . Gracias.
Thank you!
As for your question, 100% alcohol can only exist in laboratory conditions or when the package is sealed. As soon as you open it, it will absorb moisture and stabilize at a percentage probably close to 95/96%. The recommendation to use food-grade alcohol (Everclear) is because it does not contain additives and I think it alters the resins less over time, but it is expensive due to state taxes. Food-grade alcohol is 96% here in Italy. All other alcohols have low percentages of additives that make them unusable for food use, so they cost less due to the lower taxes applied. In any case, any alcohol that can dissolve shellac well will be fine for making varnish, if you are happy with the one you use that's fine, but I do not think that a higher percentage (100%) has any advantage toward 95/96%
How much is the temperature @ 1:54 ?
It is the boiling point of the varnish (just the seedlac at this point), which is an alcoholic solvent and so is determined by the boiling point of ethyl alcohol, i.e. 78°C.
Actually, the varnish will boil at around 80°C, due to the presence of resins in the alcohol which raises the boiling point a little. It wouldn't be strictly necessary to use a thermometer, just bring it to a gentle boil (no overboiling, please), but the glass rod of the thermometer is very convenient for stirring and preventing it from boiling too vigorously. You need to adjust the hotplate so that it comes to a boil slowly and in a very controlled manner.
Maestro, thank you for answering my previous question on a different video. In this video I noticed the beautiful 2 piece Amati style back. Kindly tell me how you joined this type of back. I mean, when joining it, did you book match it and then flip one side to get this effect? Or was something else done to make the flames slant in the same direction? Thank You
I did as in your first hypothesis, book-matched and with one half flipped lengthwise. It can be done with the wood of any book-matched back, there are no particular precautions to obtain this effect. But not all flame patterns match well this way, they have to give the idea of flowing as if in one piece back
@@DavideSora thank you Maestro.
Davide could the replacement of the evaporated alcohol be calculated by weight. So weighing before boiling then replacing alcohol to achieve the original weight. Also the 7 grams of Linoxin would replacing it directly with 7grams of Elemi work? Thank you for explaining your varnish making method, also best wishes for the new year.🎉
Yes, alcohol loss can be more accurately calculated by weight. Calculating it by volume is more practical, but it's essentially the same thing, you don't need extreme accuracy. Regarding Elemi, I haven't done accurate tests, but using more or less the same quantities as Linoxin should be fine. The only way, and this also applies to linoxin, which changes its elastic properties depending on aging, is to rely on one's own results in the finished violins: if the varnish gives us the sensation of being too soft or too hard, we will have to decrease or increase the ratio between soft and hard resins used. It's trivial, but when you're dealing with intrinsically variable natural materials, that's how it works. This is also why it's best to keep things simple (few paint components) so you can figure out which one is responsible if there's a problem. If you use many different resins and solvents as in some 19th and 20th century varnishes you won't be able to understand much, a real nightmare if you need to refine the properties of your varnish.😉
@@DavideSoraThank you Davide
Thank you David for demonstrating the making of this varnish, it’s very generous of you to share this with us thank you again. Would I be correct in saying that this varnish will be vastly superior to the 1704 varnish?
1704 is a good varnish that works, I also used it in the first years of my activity, but it has the disadvantage of containing the waxy parts of shellac and elemi as an elasticizing element, which are less transparent and more plastic than really elastic. In this sense, very old Linoxin is much better as it always remains elastic and also contributes to the golden yellow color significantly, while shellac and elemi tend towards a lighter and less interesting yellow. Acoustically it is more difficult to establish neat differences, but due to the aforementioned characteristic, I believe that Linoxin is also superior in this aspect.
@@DavideSora Thanks for explaining the different between the two.
David , if you don’t mind me asking how many coats of your varnish do you put on to get that deep beautiful color?
Hi Berl,
what you see in the video is the application of the third coat of "colorless" (without pigments) varnish. Linoxin contributes a lot to the beauty of this nice yellow shade, but of course the underlying wood is not white and has been tanned about a week in the UV box and by the application of the casein which, due to its basic pH, darkens the wood by further oxidation.
How is the neck coat made? Thanks for your advice
The white part that covers the neck is a simple sheet of paper, the one that protects the gluing surface of the fingerboard is made of wood (in this case Olive tree wood) but it can also be made with plywood, as you can see in this video: ruclips.net/video/AuQF1ROwZC0/видео.html
Dear Davide, thank you so much for sharing your precious knowledge with us. I have some questions about varnish: is it necessary to add alcohol to the varnish as we use it in order to maintain the same viscosity?
I varnished a violin with spirit varnish, about a month ago, it dried out but it didn't harden enough. Is there any possibility that it will harden over time? Maybe the uv light would help? I used shellac, mastic and sandarac. I really appreciate your work (near perfection) and your generosity.
Thank you very much! Ciao!
Yes, it is necessary to replenish the alcohol that evaporates while we keep the jar open during the application of each coat of varnish. This is done by eye, evaluating the viscosity of the varnish while gently shaking the jar.
After a month the varnish should be reasonably hardened, certainly not so soft that it takes the imprint of the case or to slide off under the pressure of the bridge feet. If your varnish is composed only of alcohol, shellac, sandarac, and mastic and freshly made it should be quite hard and though. If it remains soft, the causes could be different, for example if you have added essences such as lavender oil or other essential oils, which never evaporate completely, or if it has been dissolved in alcohol for a long time, in this case it will never harden properly due to the esterification process of shellac in contact with alcohol. Another cause could be that you have applied too many coats a day and have not given time to dry each coat well, so the alcohol gets trapped in the layers and keeps the varnish soft. However in this case it will harden properly over time, but it may take several months or years, depending on the thickness of the varnish layer.
UV lamps cannot do anything because there is nothing to polymerize as is the case for oil varnishes.
I hi maestro
I don't have linoxin
Can tell me wat use different
Resin for varnish
An alternative resin is elemi, obviously not the same, but it can work reasonably well. The color will be lighter because elemi is practically colorless while oxidized linoxin has a brownish-red color which gives the varnish pleasant amber reflections, warming up the final colour.
Buonasera. Per evitare che il legno assorba troppa vernice, non dovrebbe esserci un turapori?
Cosa mi consiglia di fare in base alla sua esperienza? Grazie
Io applico prima un impregnante proteico alla caseina, e poi un turapori fatto con mastice, trementina e pomice. Lo puoi vedere in questi video:
Caseina: ruclips.net/video/lexxKWBHx-I/видео.html
Mastice e trementina: ruclips.net/video/3kjqcnjZ8_4/видео.html
Wich seedlac u used Indian bisacki
I don't know the exact name, which usually indicates origin rather than quality. Anyway, I have these:
www.kremer-pigmente.com/en/shop/mediums-binders-glues/60490-seed-lac.html
www.kremer-pigmente.com/en/shop/mediums-binders-glues/60430-stick-lac.html
Both are fine, the stick lac I have has a color with more orange-brown nuances, and the seedlac is more golden yellow. Both are the same type of resin, i.e. shellac
Maestro if I may ask, what do you apply over the casein sealer to get that golden colour coat on top of which you applied the linoxyn varnish?
What you see in the video is the application of the third coat of varnish, the golden yellow color is therefore mainly given by the two previous coats of varnish. Of course, the underlying wood is not white, but has been colored by about a week of exposure in the UV box and then by the application of the casein solution which, due to its basic pH, darkens the wood by further oxidation. I would like to point out that this oxidation coloring (UV and casein) has very low penetration and affects only the surface layers of the wood (less than about a tenth of a millimeter of penetration) and does not affect the underlying layers in any way, so it is important not to carry out sanding or finishing of any kind before applying the varnish, otherwise it would be very easy to get an uneven and blotchy result.
@@DavideSora so maestro from what I understand, once the plain white wood is fully worked on, you put the white violin in the UV box for one week at least then apply casein sealer, and then simply the build up of linoxyn varnish in layers correct?
@@Aecarvalho007 After the Casein I also apply a solution of Mastic dissolved in turpentine and added with pumice, which acts as a refractive ground and pore filler but does not give a great contribution to the color, it only makes it more lively.
If you don't have a UV box or don't have the patience to wait a week to develop the tanning (or even more, the more the better), you can use chemical oxidants such as some form of Nitrite (sodium or potassium), or some equivalent commercial product such as this: www.cremonatools.it/old-wood-1700-italian-golden-ground-1700-a-b-2-x-125-cc.html
The color will not be the same, but many luthiers use these systems
@@DavideSora amazing, yes I have tried local rosin in turpentine for one instrument but it took a really long time to dry, will try mastic
@@Aecarvalho007 if you don't use a UV box even mastic takes about a week to dry. 24/48 hours in the UV box
Che filtro sta usando?
Carta filtro rapida da chimica
Bellissimo video! C'é un modo per sostituire la Linossina durante il tempo di attesa della sua preparazione? Saluti!
Grazie!
Puoi usare l'Elemi, non è la stessa cosa ma penso sia la migliore alternativa. Sostanzialmente puoi fare la "vernice 1704" molto usata in liuteria, che oltre all'Elemi conserva anche la cera presente nella gommalacca grezza (seedlac) come ulteriore elemento plastificante. Puoi vederla qui: ruclips.net/video/g0ewnWaxG-U/видео.html
@@DavideSora Grazie mille!
Hi
How make dark tiger flame
For back plate & ribs
Just to give me an idea of what you mean, do you think the violin you see at the end of this video could match your description of "dark tiger flames"? Or do you mean something more "dramatic"?
Idont know how to made tiger like this
First cazein then therpentine
Then stain tiger flame?
Can you help me show how too do
@@andrzejtruchan5236 First of all, it is necessary to have deep-flamed wood, you will never be able to obtain a marked effect with poorly flamed wood. My process starts with exposing the white violin (bare wood) for about 250 hours or more to UVA light using the UV box you see in this video: ruclips.net/video/k6A6lklzTNM/видео.html
With this treatment, the wood darkens and increases the contrast of the flames through natural oxidation, without risking the uneven coloring that would be obtained with stains that some luthiers use (water or alcohol-based stains), which in addition to the risk of uneven staining can cause blocking flames, which isn't nice at all,
Then, the Casein sealer contributes to color and oxidation, and Mastic and Turpentine increase the contrast and brightness of wood figures.
Alternatively, chemical oxidants can be used such as sodium or potassium nitrite, or some commercial oxidizing system (such as Oldwood Italian ground A+B, which is mainly sodium nitrite) and the aforementioned water stains used with skill, but for me, natural oxidation through UV is the one that offers the best results and the best control, chemical oxidants and water stains are rather unpredictable because the wood does not always react in the same way, and the risks of irreversible failure are always lurking. Furthermore, the long-term effect of chemical treatments always remains unknown, both aesthetically and acoustically. Basically, it is the whole system starting from the finishing of the wood, and then the treatments and varnishing to determine the final result, it is probably one of the most difficult things to achieve, many attempts and tests on scrap wood are needed
Finished results?
Here they are:
ruclips.net/p/PLaxadm6POX7GQTPVDo5tDrHPHL--5hg5q
Maestro hello from Greece...!!! IN THE WINTER THE VARNISH FREEZES .HOW CAN WARM UP THE VARNISH IN ORDER TO PAINT THE VIOLIN?
With alcoholic solvent, it is impossible to heat the varnish to apply it, because you would only obtain faster solvent evaporation with serious application problems. What you need to do is warm up the environment where you varnish, if the room temperature is below 19° C you cannot apply varnish successfully. If you cannot heat the room, you must avoid the colder periods, probably the ancients only varnished their violins in the summer or in any case in the hot and sunny periods of the year, reserving the winter only for construction.
@@DavideSora Thank you very much! is the same way also for oil varnish?
@@Thanos-x7e Oil-based varnish can be heated for application, especially if it is very thick and contains little or no solvent. The boiling point of solvents such as turpentine or petroleum is much higher than alcohol so they can handle slight heating. In any case, in cold environments, it is always better not to varnish, even oil varnish will need heat and sun (or UV) to dry properly
@@DavideSora thank you for your advice.can you tell me specifically how to heat it?...in Bain Marie. ?
@@Thanos-x7e Yes, a bain-marie is a good system, but the paint doesn't need to be heated very much, just assessed by eye that the fluidity has improved and that the varnish can be spread easily. Varnishes are not all the same, so it is impossible to establish an ideal temperature. The best thing remains that the varnish has the correct fluidity at a room temperature between 20° and 30°, without having to heat it.
Ciao Maestro
Ottimo video, sto imparandos molto con il tuo modo di lavorare.
Potresti darmi gli indirizzi dove acquisti i tuoi prodotti vernicianti.
Grazie in anticipo per il vostro aiuto.
Cordiali saluti
Yannick MELCHIOR
Il negozio che mi sento di consigliare è Kremer: www.kremer-pigmente.com/it/ Trovi un po' tutto quello che serve per le vernici di liuteria, e di ottima qualità.
Grazie maestro! Vorrei chiedere se Lei può fare un video per come si fa lo smusso nero? Buonaserata
Non ho un video, ma ho fatto questo articolo che spiega nel dettaglio il procedimento:
davidesora.altervista.org/articoli/lannerimento-degli-smussi/
Alla fine dell'articolo trovi anche l'icona per scaricare il Pdf in italiano e anche in inglese
Oh, grazie mille!!
Me gusta, pero no me he enterado de casi nada
Resins such as Seedlac and Mastic are quite easily found in specialized shops, this is a very well-stocked one: www.kremer-pigmente.com/en/shop/mediums-binders-glues/
Linoxine is the real problem, you can't find it on sale and you have to make it yourself starting from linseed oil, a rather long process. It can be replaced by Elemi, it's not the same thing and the color will be less beautiful, but it can work decently well.
Buongiorno Davide! Come promesso, il mio primo violino costruito grazie ai tuoi video è finito, vorrei portartelo a vedere a Cremona un sabato, e se fossi così gentile vorrei provarne uno tuo! Quando possiamo organizzare? Se mi dai una mail magari ti scrivo in privato, grazie mille
Trovi la mia e-mail qui: davidesora.altervista.org/trovaci-2/contatti/
Title your videos in the same language as the video and you probably won't get as many thumbs down...
You can find the English translation of the text with timestamps in the description page
@@DavideSoraNow you tell us. I had google translate open in a separate tab typing it all manually. 😀
@@KenFullman 😄 Always check the description page first, it's an essential rule for RUclipsrs😉
@@DavideSoraSounds like a plan. You know what they say, "if you;'re looking for something, it's always in the last place you look"
@@KenFullman 😇