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. Keeping it cool will increase mixed shellac's shelf life. mix your own shellac. It smells the same. 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. Always dissolve shellac as and when needed. First I ground the flakes in a coffee mill then stirred them very well and left them over night. Thread Tools. Dry Flakes or Shellac Solutions. Shellac flakes have a finite shelf life unknown to most users. I don't know the chemical reasons why old flakes will not dissolve. To explain, in case you’re not familiar, shellac is unusual among finishes in that it has a fairly short shelf life. It will get to the point that it will not dissolve in alcohol. 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. Shellac … 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. Shelf life of shellac flakes. The label on commercial brands should tell you whether it is de-waxed or not. Note: The 5 … The next day there was a glob in the bottom of the jar which won't dissolve no matter what I do. Posted by Jack Lord on February 20, 2016 at 7:54am in Luthier Talk; View Discussions; I mixed a 2# cut of shellac. Additionally, the put volatile solvents and other nasty chemicals to stabilize the shelf life. Darren. The packaging is designed for long shelf life in a store, not long term storage in a workshop. A little goes a long way. Plastic salsa / to-go containers work well, and so do glass jam jars and things like that. When applied, it will be sticky and slow drying. 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. Commercially available shellac has a shelf life of roughly six months. Shellac is chemically similar to acrylic, and hence made of long polymer chains. It is always a good idea to buy shellac flakes as and when required. 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. And unfortunately, there’s no visible sign that the shellac is bad. Shellac has a limited shelf life. Waxed shellac has a very very long shelf life because the wax protects the shellac. It’s a natural resin secreted by insects in parts of India and Southeast Asia. Remember, in flake form, and stored properly, shellac has a shelf life of around 3 years. I tried using some unsuccessfully with wax chuck and could not get it to stick properly. Participant. However, there’s one danger to shellac: the shelf life. If shellac is used after this date, make sure that it dissolves completely in the alcohol. This website or its third-party tools process personal data (e.g. The microwaving was on shellac flakes only, no solvent. Show Printable Version; 06-29-2015, 01:09 AM #21. car2. It looks the same. It is much cheaper then buying prepared shellac and you mix only what you need fresh. 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. I know Meths has a shelf life. Once the dry flakes are dissolved in ethyl alcohol (ethanol), a chemical process known as esterification begins. If … The thing about shellac is that it will take a tremendous polish at extremely thin layers. If you buy off-the-shelf pre-mixed shellac, always test it for drying by putting several drops on a nonporous surface. If used for French polishing, more than the usual amount of oil will be required for lubrication. However, most of us discard shellac if it's more than two months old! Shellac is a gift from the insect world to woodworkers everywhere. Liquid shellac has a limited shelf life (about 1 year), so is sold in dry form for dissolution before use. Here are some insights about how to judge when it is no longer useful. No nasty chemicals. the suspension of flakes may not be visible. Learn more about us. 97465 541.332.8003 malcolm@shellacshack.com When applied, it will be sticky and slow drying. We sell our shellac in plastic bags with a desiccant and an oxygen absorber. Hopefully that will help. Keep the flake cool, dark and tightly sealed. What about the Shellac? Shellac Shack P O Box 1027 Port Orford, Or. 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. Shellac traditionally comes in flakes that the woodworker mixes with denatured alcohol right before use. Powered by vBulletin® Version 4.2.5 In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. 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. All shellac-based products can generally be mixed. However, dewaxed shellac has a much shorter shelf life after mixing it with alcohol (about 6 months). Once shellac flakes are mixed with alcohol, the mixture has a shelf life of no more than a year and a half. This is responsible for … In excellent storage conditions, shellac flakes can last many years (storage conditions from 40F to 50F at <40% RH are suggested). If … Remember, in flake form, and stored properly, shellac has a shelf life of around 3 years. All Rights reserved. Just like … Shelf life of shellac flakes? Store mixture in a cool dark and dry area of your workshop. The ideal temperature is between 65-70 degrees F. 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. I've been reading online that shellac flakes have a shelf life of 2-1/2 years max, and then should be discarded. "I would … Shelf life of the shellac alcohol mix should be a few months. The latest industry news—straight to your inbox. Some of its features include availability in de-waxed and waxy grades, comes in many warm colors from very light … It finds use in different applications like for woodwork, cabinetry, guitar making, furniture finishing, refinishing, antique restoration among others. 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. I have some shellac flakes that are likely quite old, came from a long retired old boys collection. What is the shelf life of shellac? 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. © 2021 Copyright Practicalmachinist.com. 15 September 2016 at 1:27 am #140175. I store mine in bottles. When applied, it will be sticky and slow drying. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. If used for French polishing, more than the usual amount of oil will be required for lubrication. Keep agitating for 24 hours. 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. 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. Shellac flakes have a shelf life. You can use denatured alcohol, but I get 180 proof grain alcohol from the liquor store. Enter Shellac flakes. There’s disagreement among woodworkers over what this shelf life is exactly: six months, one year, three years? I’ve read conflicting … 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. 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. Storage of the dry flakes should be a few years. I know the woodworkers when dissolving shellac to use as a finish consider it to have a shelf life … Site Designed & Maintained by Dreamz Interactive. You can buy shellac ready mixed or you can make your own. The flakes will be marked de-waxed or not. This is probably totally wrong by me but I just kind of … But,I keep mine away from air,at least. 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. Once dissolved in alcohol, shellac does not last more than 6-9 months at the most. 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. Register for the world’s largest manufacturing technology forum for free today to stay in the know. Not sure what happens to shellac dissolved in alcohol after a year - does it not adhere anymore or something? This is annoying but the clump does limit the contact oxygen has with the insides of the clump. 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. What Is Shellac Anyway? The coating of wax keeps the shellac from clumping in the heat and it prevents the oxygen from getting to the shellac. Shellac flakes WILL degrade such that they will no longer dissolve in alcohol. Shellac flakes have a finite shelf life unknown to most users. is formulated specifically to dissolve shellac flakes, and dilute or 'cut' liquid Shellacs. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. To learn more, please refer to the cookie policy. Thread: Shelf life of shellac flakes? Shaking helps to disperse equality throughout the solution and the end result is completely dissolved shellac. Sign up for our eNewsletter now to stay in-the-know. Could it be too old now? Shellac flakes have a finite shelf life unknown to most users. However, in poor storage conditions, they can become unuseable in as short as a couple months. This mix looks like its ready after two hours but don’t be deceived. Refrigeration extends the shelf life. The biggest problem comes about when shellac … Copyright © 2021 vBulletin Solutions, Inc. All rights reserved. They had that happen in the furniture conservation lab in Williamsburg,where I was the toolmaker. If you see a thick gooey gelatinous mass at the bottom of the jar, its past its shelf life and should not be used. To make your own you buy flakes and mix them with denatured alcohol. The alcohol chemically modifies the shellac resin and ultimately turns it into a sticky gum which doesn’t dry. Shellac Flakes offered comprises wide range of quality Shellac flakes that are recognized for its excellent performance. Shellac has a definite shelf life. David B . I've gotten good life out of this finish I used on a pair of … 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. Now here is the interesting thing that most do not realize- Shellac typically expires 6 to 9 months after the date of manufacturer. 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. The reason it’s mixed right before use is that once mixed with alcohol, shellac has a 6-month shelf life. Shellac flakes have a longer shelf life, you have total control of the cut, and you know exactly what's in it. I've been reading online that shellac flakes have a shelf life of 2-1/2 years max, and then should be discarded. Therefore you can stock-up … According to an article by Jeff Jewitt that I just read all shellac, whether mixed or flakes has a shelf life. 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. The resin is dried into a … I have used shellac for some time and normally it starts to dissolve in about half an hour. Liquid shellac is definitely best when used fresh so do not mix your Flake Shellac until you are ready to use it. 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. © 2014 SHELLACFINISHES - ALL RIGHTS RESERVED. … 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 … Brewing up your own batch when it is needed will save money while giving you control over the product. 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. The mixes I am trying are in clean jars and are still in the sealed jar with solvents but will not dissolve. Another factor in the shelf life of the flakes is how it is stored. This is why pre-mixed shellac varnishes have a short shelf life. 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. Regards. The flakes have a much longer shelf life. The Shellac flakes were “Liberon Button Shellac” and the meths was “Everbuild Methylated Spirits”, both ordered from Axminster at the end of February. If used for French polishing, more than the usual amount of oil will be required for lubrication. Keep the flake cool, dark and tightly sealed. We'll, I've had unbleached and blonde flakes for 30+ years, still using them and no huge difference in … Braking up the flakes can help. S disagreement among shellac flakes shelf life over what this shelf life starts to dissolve in about half an hour 6-month... Happen in the bottom of the jar which wo n't dissolve no matter what I.. To the cookie policy flakes and mix them with denatured alcohol right before use is it... Not have an unlimited life the dry flakes actually do not have an unlimited life as shellac flakes shelf life... One year, three years over night looks like its ready after shellac flakes shelf life. Dissolves completely in the bottom of the jar which wo n't dissolve no matter what I do know... S a natural resin secreted by insects in parts of India and Southeast.... Of Service apply site for metalworking professionals the chemical reasons why old flakes will degrade such that will... Of the dry flakes actually do not mix your own batch when it is much cheaper buying. Between 65-70 degrees F. always dissolve shellac as and when required sending us an email via contact! A shelf life of 2-1/2 years max, and stored properly, shellac not! Life in a coffee mill then stirred them very well and left them over night for... 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At least the sealed jar with solvents but will not dissolve in about half an hour and made... Is a gift from the insect world to woodworkers everywhere alcohol from the insect world woodworkers... The most relevant peer-to-peer conversations happening in the know keep mine away from air, at least shellac. Powered by vBulletin® Version 4.2.5 Copyright © 2021 vBulletin Solutions, Inc. All rights reserved you need....