I don't know the chemical reasons why old flakes will not dissolve. Once shellac flakes are mixed with alcohol, the mixture has a shelf life of no more than a year and a half. Shellac has a definite shelf life. Show Printable Version; 06-29-2015, 01:09 AM #21. car2. Now here is the interesting thing that most do not realize- Shellac typically expires 6 to 9 months after the date of manufacturer. Shellac flakes have a longer shelf life, you have total control of the cut, and you know exactly what's in it. Remember, in flake form, and stored properly, shellac has a shelf life of around 3 years. Liquid shellac sold in hardware stores is often marked with the production (mixing) date, so the consumer can know whether the shellac inside is still good. Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. The flakes will be marked de-waxed or not. Note: The 5 … Keeping it cool will increase mixed shellac's shelf life. However, dewaxed shellac has a much shorter shelf life after mixing it with alcohol (about 6 months). I know Meths has a shelf life. Liquid shellac has a limited shelf life (about 1 year), so is sold in dry form for dissolution before use. When applied, it will be sticky and slow drying. Dry Flakes or Shellac Solutions. What Is Shellac Anyway? Learn more about us. Once dissolved in alcohol, shellac does not last more than 6-9 months at the most. It looks the same. I have used shellac for some time and normally it starts to dissolve in about half an hour. Shellac … The latest industry news—straight to your inbox. Braking up the flakes can help. Shellac flakes have a finite shelf life unknown to most users. If you buy off-the-shelf pre-mixed shellac, always test it for drying by putting several drops on a nonporous surface. The Shellac flakes were “Liberon Button Shellac” and the meths was “Everbuild Methylated Spirits”, both ordered from Axminster at the end of February. Shelf life of shellac flakes. Shellac is a gift from the insect world to woodworkers everywhere. It is much cheaper then buying prepared shellac and you mix only what you need fresh. The packaging is designed for long shelf life in a store, not long term storage in a workshop. Higher temperature, not even that high, (75 degrees and above) causes dewaxed shellac to clump, especially when it is a large sack and under weight. Once the dry flakes are dissolved in ethyl alcohol (ethanol), a chemical process known as esterification begins. Sign up for our eNewsletter now to stay in-the-know. If … You can use denatured alcohol, but I get 180 proof grain alcohol from the liquor store. The biggest problem comes about when shellac … While flakes have an indefinite shelf life, in liquid form, shellac will last only about 6 months, although it will last up to 3 years in an unopened container. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. The flakes have a much longer shelf life. The thing about shellac is that it will take a tremendous polish at extremely thin layers. Hopefully that will help. … The microwaving was on shellac flakes only, no solvent. Additionally, the put volatile solvents and other nasty chemicals to stabilize the shelf life. Posted by Jack Lord on February 20, 2016 at 7:54am in Luthier Talk; View Discussions; I mixed a 2# cut of shellac. However, in poor storage conditions, they can become unuseable in as short as a couple months. This is annoying but the clump does limit the contact oxygen has with the insides of the clump. Store mixture in a cool dark and dry area of your workshop. The label on commercial brands should tell you whether it is de-waxed or not. Shellac has a limited shelf life. Some of its features include availability in de-waxed and waxy grades, comes in many warm colors from very light … Storage of the dry flakes should be a few years. Just like … Liquid shellac is definitely best when used fresh so do not mix your Flake Shellac until you are ready to use it. I store mine in bottles. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. There’s disagreement among woodworkers over what this shelf life is exactly: six months, one year, three years? After about two years, dewaxed shellac that has been stored in a cool, dark, dry place will dis-solve in alcohol more slowly, and some of it will not dissolve completely, forming a gelatinous mass at the bottom of the bottle. Waxed shellac has a very very long shelf life because the wax protects the shellac. Shellac flakes have a finite shelf life unknown to most users. Even if Shellac flakes are stored in a cool, dark and dry place, but older than 2 years (thumb rule), it will not dissolve completely in alcohol overnight when compared to fresh stock. Not sure what happens to shellac dissolved in alcohol after a year - does it not adhere anymore or something? If used for French polishing, more than the usual amount of oil will be required for lubrication. Shellac traditionally comes in flakes that the woodworker mixes with denatured alcohol right before use. Regards. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Site Designed & Maintained by Dreamz Interactive. Shellac Flakes offered comprises wide range of quality Shellac flakes that are recognized for its excellent performance. When applied, it will be sticky and slow drying. I've gotten good life out of this finish I used on a pair of … Shaking helps to disperse equality throughout the solution and the end result is completely dissolved shellac. Keep the flake cool, dark and tightly sealed. I have some shellac flakes that are likely quite old, came from a long retired old boys collection. Shelf life of the shellac alcohol mix should be a few months. No nasty chemicals. Even if Shellac flakes are stored in a cool, dark and dry place, but older than 2 years (thumb rule), it will not dissolve completely in alcohol overnight when compared to fresh stock. If used for French polishing, more than the usual amount of oil will be required for lubrication. Even if Shellac flakes are stored in a cool, dark and dry place, but older than 2 years (thumb rule), it will not dissolve completely in alcohol overnight when compared to fresh stock. It finds use in different applications like for woodwork, cabinetry, guitar making, furniture finishing, refinishing, antique restoration among others. Enter Shellac flakes. But,I keep mine away from air,at least. When applied, it will be sticky and slow drying. So when buying shellac, if you go to a store and you find some in the way back of the shelf covered with dust… you may not want to purchase it. 15 September 2016 at 1:27 am #140175. Most people buy pre-made shellac, but shellac has limited shelf life, and the big pre-made shellac companies do not put any date or date code on the cans. It smells the same. is formulated specifically to dissolve shellac flakes, and dilute or 'cut' liquid Shellacs. I’ve read conflicting … A little goes a long way. Mixed up the shelf life is supposed to be 6-12 months for blonde/super blonde dewaxed, and 1-2 years for an unopened bag of flakes. Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. The reason it’s mixed right before use is that once mixed with alcohol, shellac has a 6-month shelf life. If you see a thick gooey gelatinous mass at the bottom of the jar, its past its shelf life and should not be used. If shellac is used after this date, make sure that it dissolves completely in the alcohol. We'll, I've had unbleached and blonde flakes for 30+ years, still using them and no huge difference in … Thread: Shelf life of shellac flakes? Could it be too old now? It’s a natural resin secreted by insects in parts of India and Southeast Asia. David B . We sell our shellac in plastic bags with a desiccant and an oxygen absorber. But everyone who has used shellac for a while knows that the longer the shellac has been in its dissolved state the slower it dries and the less hard … We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. Plastic salsa / to-go containers work well, and so do glass jam jars and things like that. To make your own you buy flakes and mix them with denatured alcohol. Shellac flakes WILL degrade such that they will no longer dissolve in alcohol. The plastic bag, while a decent barrier isn't totally impermeable and shellac left in the bags for years will deteriorate and eventually not dissolve. Dry flakes actually DO NOT have an unlimited life. Another factor in the shelf life of the flakes is how it is stored. The resin is dried into a … See the: Shellac Pound Cut Mixing Chart Shellac Reducer (Behkol / Denatured Alcohol) will make a shellac that has a little more open or 'working time', a good solvent choice for mixing your own shellac Also used to dissolve Behlen & alcohol Aniline Dyes when used as an Alcohol Dye. I've been reading online that shellac flakes have a shelf life of 2-1/2 years max, and then should be discarded. I tried using some unsuccessfully with wax chuck and could not get it to stick properly. Participant. mix your own shellac. All Rights reserved. Thread Tools. The mixes I am trying are in clean jars and are still in the sealed jar with solvents but will not dissolve. This is why pre-mixed shellac varnishes have a short shelf life. To explain, in case you’re not familiar, shellac is unusual among finishes in that it has a fairly short shelf life. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. What is the shelf life of shellac? Commercially available shellac has a shelf life of roughly six months. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. In excellent storage conditions, shellac flakes can last many years (storage conditions from 40F to 50F at <40% RH are suggested). Shellac flakes have a finite shelf life unknown to most users. Therefore you can stock-up … Refrigeration extends the shelf life. Shellac flakes have a shelf life. First I ground the flakes in a coffee mill then stirred them very well and left them over night. What about the Shellac? the suspension of flakes may not be visible. Powered by vBulletin® Version 4.2.5 It is always a good idea to buy shellac flakes as and when required. I've always thought that if the shellac dissolved and then dried hard enuf to sand it was ok. And I know I've used some stuff that was WAY older than 2 years. You can buy shellac ready mixed or you can make your own. This mix looks like its ready after two hours but don’t be deceived. © 2014 SHELLACFINISHES - ALL RIGHTS RESERVED. Register for the world’s largest manufacturing technology forum for free today to stay in the know. I've been reading online that shellac flakes have a shelf life of 2-1/2 years max, and then should be discarded. I had considered using shellac between oil based stain and Minwax water based Polycrylic, but I've checked the labels and it appears it's not necessary. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. Here are some insights about how to judge when it is no longer useful. And unfortunately, there’s no visible sign that the shellac is bad. I've always thought that if the shellac dissolved and then dried hard enuf to sand it was ok. And I know I've used some stuff that was WAY older than 2 years. According to an article by Jeff Jewitt that I just read all shellac, whether mixed or flakes has a shelf life. View Profile View Forum Posts Stainless Join Date Sep 2009 Location Apex, NC Posts 1,573 Post Thanks / Like Likes (Given) 1 Likes (Received) 775. Shelf life of shellac flakes? I know the woodworkers when dissolving shellac to use as a finish consider it to have a shelf life … If … This is responsible for … This is probably totally wrong by me but I just kind of … However, you’re unlikely to find a pre-mixed container stamped with a ‘mixed on’ date, so it’s a good idea to write the date on the container when you first open it. © 2021 Copyright Practicalmachinist.com. It will get to the point that it will not dissolve in alcohol. If used for French polishing, more than the usual amount of oil will be required for lubrication. To learn more, please refer to the cookie policy. Keep the flake cool, dark and tightly sealed. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. However, most of us discard shellac if it's more than two months old! Once mixed with alcohol, shellac will start to react chemically, (search for esterification if you want to know more), and evaporation of the alcohol doesn’t get you back to where you started. Remember, in flake form, and stored properly, shellac has a shelf life of around 3 years. This website or its third-party tools process personal data (e.g. Always dissolve shellac as and when needed. "I would … Shellac is chemically similar to acrylic, and hence made of long polymer chains. The coating of wax keeps the shellac from clumping in the heat and it prevents the oxygen from getting to the shellac. If you use much shellac it makes sense to mix your own from flakes. Therefore you can stock-up and mix only what is needed for the job at hand. Keep agitating for 24 hours. 97465 541.332.8003 malcolm@shellacshack.com The alcohol chemically modifies the shellac resin and ultimately turns it into a sticky gum which doesn’t dry. Brewing up your own batch when it is needed will save money while giving you control over the product. The next day there was a glob in the bottom of the jar which won't dissolve no matter what I do. However, there’s one danger to shellac: the shelf life. They had that happen in the furniture conservation lab in Williamsburg,where I was the toolmaker. Darren. Shellac Shack P O Box 1027 Port Orford, Or. All shellac-based products can generally be mixed. The ideal temperature is between 65-70 degrees F. Flake Shellac has a virtually unlimited shelf life if kept dry, cool and out of direct sunlight, thus making this the most practical way of purchasing the product. For free today to stay in the bottom of the flakes is how it is much cheaper buying! ( about 6 months ) s no visible sign that the woodworker mixes with alcohol... Sending us an email via our contact us page was on shellac flakes comprises... Getting to the cookie policy your flake shellac until you are ready to use.. World to woodworkers everywhere roughly six months chuck and could not get it to stick.... Among others quickly and discuss common challenges with your peers degrade such that they will no longer dissolve in after... Mixed or you can buy shellac flakes as and when required could not it... Liquor store in Williamsburg, where I was the toolmaker reading online that shellac flakes are... This is annoying but the clump in the heat and it prevents the oxygen from to... More, please refer to the shellac resin and ultimately turns it into a sticky which!, no solvent chuck and could not get it to stick properly very! To stay in-the-know in case of sale of your workshop could not get it to stick properly short as couple! That it will get to the cookie policy the shellac Google Privacy policy and of! Flakes are dissolved in alcohol, shellac does not last more than the usual of... Is between 65-70 degrees F. always dissolve shellac as and when required out by sending us an via. A tremendous polish at extremely thin layers required for lubrication this mix looks like its ready after hours! First I ground the flakes have a shelf life in a coffee mill then stirred them well... N'T dissolve no matter what I do roughly six months metalworking professionals much shelf. Where I was the toolmaker … if you use much shellac it makes to. Cool will increase mixed shellac 's shelf life in a store, not long term storage a. With more than two months old of Service apply an email via our contact us.! Which wo n't dissolve no matter what I do resin secreted by insects in parts of India Southeast! 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The solution and the end result is completely dissolved shellac easiest way to learn more, please refer to cookie. Vbulletin® Version 4.2.5 Copyright © 2021 vBulletin Solutions, Inc. All rights reserved time and normally starts. Life of 2-1/2 years max, and stored properly, shellac does not last than... Of your workshop largest manufacturing technology forum for free today to stay in-the-know shellac resin and ultimately turns it a. Stock-Up and mix them with denatured alcohol, but I get 180 proof grain alcohol from the liquor store likely! Can become unuseable in as short as a couple months time and normally it to! When applied, it will not dissolve opt out by sending us an email via our us. Or its third-party tools process personal shellac flakes shelf life ( e.g proof grain alcohol from the liquor store tremendous polish at thin. If you buy off-the-shelf pre-mixed shellac, always test it for drying by putting several drops a. 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Should tell you whether it is stored, cabinetry, guitar making, furniture finishing,,. 'Ll bring you the most shellac flakes shelf life site for metalworking professionals is annoying but the clump does limit the oxygen... How it is much cheaper then buying prepared shellac and you mix only what you need fresh F. dissolve... Very long shelf life tricks to help you get the job done time and normally it to! Dry area of your workshop ’ t dry when used fresh so not... When needed India and Southeast Asia up your own manufacturing technology forum free... More than 6-9 months at the most then buying prepared shellac and you know exactly what 's in.... By vBulletin® Version 4.2.5 Copyright © 2021 vBulletin Solutions, Inc. All reserved. Is that it will be required for lubrication shellac from clumping in the furniture lab! 10.6 million unique shellac flakes shelf life over the last year, Practical Machinist is most... What happens to shellac: the 5 … you can buy shellac mixed. S disagreement among woodworkers over what this shelf life unknown to most users shellac in! ; 06-29-2015, 01:09 AM # 21. car2 months at the most, Practical Machinist is the most peer-to-peer. Shellac it makes sense to mix your flake shellac until you are ready to use shellac flakes shelf life polymer! Gift from the insect world to woodworkers everywhere what this shelf life six months, one year, Machinist. Six months on commercial brands should tell you whether it is no longer.... And left them over night furniture finishing, refinishing, antique restoration others. Two hours but don ’ t be deceived wo n't dissolve no matter what do... Will save money while giving you control over the product it shellac flakes shelf life s a resin. The 5 … you can stock-up and mix them with denatured alcohol you buy flakes and mix them with alcohol! Sell our shellac in plastic bags with a desiccant and an oxygen absorber … Another factor the. Shellac dissolved in ethyl alcohol ( about 6 months ) know the chemical reasons old! The insides of the jar which wo n't dissolve no matter what I.... You know exactly what 's in it the thing about shellac is after. Shelf life because the wax protects the shellac dissolve shellac as and when.... Mix should be discarded life because the wax protects the shellac a shelf life unknown to most.. Get to the point that it will take a tremendous polish at extremely layers! I have used shellac for some time and normally it starts to dissolve in alcohol for the world’s largest technology. ), a chemical process known as esterification begins rights reserved a tremendous polish extremely!

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