It’s recommended to prepare a slightly thicker varnish, while using, it will be possible to add some alcohol to the pad. It’s also possible to lower the quantity of shellac and to replace it with a resin like Sandarac or Siam Benzoin. This will enhance either the sheen or the hardness of the varnish.
In a container or a bottle, pour more or less 1 liter of Denatured Alcohol and add the shellac. Stir the container until complete dissolution of the shellac.
If you use a waxed shellac, after a few days, the varnish will separate, the wax will deposit in the bottom of the container and you simply need to collect the clear and limpid part.