Call: (858) 780 2865
Email: sales@shellacfinishes.com
Call: (858) 780 2865
Email: sales@shellacfinishes.com
Take a clean glass bottle with a tight fitting lid that will hold the amount of alcohol that you intend to use. Use the above measurements for the shellac flakes and alcohol depending on the cut and quantity that you want to make. Pour the shellac flakes and alcohol into the bottle and close the lid tightly. Give it a few shakes from time to time. The shellac will dissolve in a few hours. Run the solution through a paint sieve, that can be found at any paint store, to remove impurities. You are ready to apply 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. When applied, it will be sticky and slow drying. If used for French polishing, more than the usual amount of oil will be required for lubrication. If shellac is used after this date, make sure that it dissolves completely in the alcohol. If you see a thick gooey gelatinous mass at the bottom of the jar, its past its shelf life and should not be used. It is always a good idea to buy shellac flakes as and when required.
Once dissolved in alcohol, shellac does not last more than 6-9 months at the most. Store mixture in a cool dark and dry area of your workshop. The ideal temperature is between 65-70 degrees F.
Always dissolve shellac as and when needed.
Back in the old days, only seedlac and buttonlac was available. The process to make these are still carried on today. Seedlac is the shellac that has been removed from the twigs, cleaned and sieved by hand. Buttonlac is made from the cleaned seedlac by pushing it through a muslin cloth held close to a charcoal fire. Both these varieties contain wax, which is a by product of the lac insect. Unfortunately wax is not the wood polishers best friend. When amalgamated with shellac, it makes the finish porous and facilitates reaction with moisture. Ever heard about stories of a white ring forming if a cold glass of water is left for long over a shellacked surface? Well, it’s the wax in the shellac that helps in the creation! Therefore always decant waxy shellac varieties many times to remove as much wax as possible. Shellac without wax will have superior adhesion and water resistant qualities.
But consider yourself lucky that due to technology, you don’t have to go through the decanting process. Dewaxed shellac is now available!! The wax content of this variety is between 0.2-0.5%. This is the very reason why I strongly recommend using dewaxed shellac. Whether you are using it for a an antique or for a new finish, it matters little. It is available in different colors and if not, it can always be colored with aniline dyes to suit your taste.
One of the major reasons why waxy shellac is recommended is because less amount of lubricating oil for the pad is required thus making the burnishing process easier. But is it worth the fact that it is more susceptible to water? I think not. Moreover fresh dewaxed shellac will require very little lubricating oil. Ridding the lubricating oil that rises to the surface eventually, is a simple process and worth the time than having a finish that will ruin easily with water.
The only disadvantage is time. Since dewaxed varieties are the most processed, their shelf life is about 2 years from the date of manufacture. Therefore at ShellacFinishes all our shellac has an expiration date. The date is merely an indicator and not to be taken as an end date. If shellac is used after this date, make sure that it dissolves completely in the alcohol. If you see a thick gooey gelatinous mass at the bottom of the jar, its past its shelf life and should not be used. It is always a good idea to buy shellac flakes as and when required.
It is not necessary to use only Seal-Lac prior to Royal-Lac application.
Seal-Lac is a shellac based sealer and pore filler. It is always a good idea to use a sealer before application of any kind of finish. A good sealer acts as a interface between the wood and the final finish. It not only gives a smooth flat foundation for the finish but also helps in adhesion. It is highly recommended that Seal-lac be used. However just plain shellac can also do the job. The only difference being that it will not act as a fast pore filler like Seal-Lac.
All finishes including shellac take time to cure after application. Curing is complete after all the solvent has gassed out. The thumb rule for cure for most finishes is between 25-30 days. Even shellac, to show its true characteristics takes this period of time. Even though the finish may be dry to touch after a few hours, it does not necessarily mean that it has cured. A quick test to ascertain if it is ready for sanding before the cure time is to gently sand with 320 or higher grit. If dust is produced, it is safe to sand it.
Please check with your local woodworking organization for a coupon code.
If you would like to include your organization in the above list, please send your inquiry to sales@shellacfinishes.com